Seismologists use the travel time of the P and S waves to calculate the distance from a seismic receiving station to the epicenter of an earthquake.
Seismology is the study of earthquakes and seismic waves that propagate through the Earth. Seismic waves are the waves that travel through the Earth's layers and cause earthquakes. These waves have different velocities, which allows seismologists to identify the Earth's internal layers and characteristics.A seismic wave is a ground-shaking energy that originates from the focus or hypocenter of an earthquake. They propagate through the Earth's layers and can be recorded by seismographs. The three main types of seismic waves are primary waves (P-waves), secondary waves (S-waves), and surface waves (L-waves).
Seismologists use the travel time of the P and S waves to calculate the distance from a seismic receiving station to the epicenter of an earthquake. The P-waves are faster and therefore reach the station first. The S-waves are slower and take a longer time to arrive at the station. The time difference between the arrival of P and S waves is measured and used to calculate the distance from the station to the epicenter of the earthquake. This is done using a travel-time graph, which provides the distance from the station to the epicenter.
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kilaunea is not as explosive as the eruption of mt st helens. what is the overall control that dictates this differnecec
Kilauea is not as explosive as the eruption of Mt. St. Helens due to the difference in magma viscosity and gas content. The overall control that dictates this difference is magma composition and gas content.
The magma composition of Kilauea is primarily basaltic, which has a low viscosity, and gas content is less than that of Mt. St. Helens. Due to these properties, the lava can flow easily and doesn't create any blockages or blockage pressure. Hence, the eruption is effusive and not explosive. The effusive eruption leads to slow-moving lava flows that do not have the potential to be very destructive.
On the other hand, Mt. St. Helens has an andesitic composition, which has a higher viscosity and more gas content. It leads to the creation of blockages within the vent of the volcano, which ultimately leads to an explosive eruption. When the pressure built up inside the vent due to the blockage, it eventually led to an explosive eruption.
The difference in the viscosity of magma, and gas content is an overall control that dictates the difference between the two volcanoes' eruption. Therefore, it is concluded that the difference in magma composition and gas content is responsible for the difference in the explosiveness of Kilauea and Mt. St. Helens' eruption.
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The oldest abundant fossils of complex multicellular life w/shells and other hard parts date from the: a. Precambrain b. Paleozoic c. Mesozoic d. Cenozoic.
The oldest abundant fossils of complex multicellular life with shells and other hard parts date from the Paleozoic era. The correct option is B. Paleozoic.
This era, which lasted from about 541 to 252 million years ago, is sometimes referred to as the Age of Invertebrates because of the many different types of invertebrates that thrived during this time. The Cambrian explosion, which occurred about 541 million years ago, marks the beginning of the Paleozoic era.
During this period, there was a sudden and rapid increase in the diversity of life on Earth, including the appearance of the first multicellular organisms with hard parts like shells and skeletons. This included trilobites, brachiopods, mollusks, and other types of invertebrates.
Later in the Paleozoic era, there were several mass extinction events, including the Permian-Triassic extinction event which wiped out 96% of all marine species. However, the survivors of these events went on to diversify and evolve into the complex and diverse array of life we see on Earth today.
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q1: for approximately how many thousands of years has the earth been in the peak of an interglacial period within the present ice age?
The current interglacial period, which began around 11,700 years ago, is part of the Quaternary Ice Age that has been occurring for the past 2.6 million years.
During this period, the Earth has experienced multiple ice ages with cooler and warmer periods known as glacial and interglacial phases. The present interglacial period, known as the Holocene, has been in the peak of its cycle for about 11,000 years.
During this time, global temperatures have been relatively stable, with sea levels rising and falling as the glaciers advance and retreat. This has enabled human civilizations to flourish and expand.
Despite this, the Earth is still in the Ice Age and the current interglacial period could end at any time, leading to a new glacial phase. The duration of this interglacial period is unknown, but it is likely to last several thousand years more before the next glacial period begins.
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which of the following are foliated intermediate- or high-grade metamorphic rocks that would form in the setting in part 1? choose one or more: a. phyllite b. schist c. marble d. slate e. gneiss f. hornfels
In the environment, foliated intermediate- to high-grade metamorphic rocks called gneiss would form.
Which of the above is a foliated rock of high or intermediate metamorphic grade?Slate, phyllite, schist, & gneiss are the several types or foliated metamorphic rocks, ordered by of the grade or severity of metamorphic rocks and the type of foliation.
Metamorphic rocks of intermediate grade also contain garnet and mica. At 800 degrees Celsius, high grade metamorphic stones develop in regions that are so hot they virtually melt. Sillimanite, a mineral that is commonly found inside the rock gneiss, is one that develops in this extreme heat.
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to what extent do we think the geologies of the terrestrial worlds were destined from their births? explain.
The geological features of the terrestrial worlds have been influenced factors such as the initial composition of the protoplanetary disk, the planet's distance from the Sun, its size, the presence or absence of a magnetic field, and others.
The geological features of these planets are thus not predetermined from their birth but are influenced by various factors that continue to act on them.
The geological features of these planets are therefore not predetermined from their birth but are influenced by a variety of factors that continue to act on them.
What is the Terrestrial World?
Terrestrial planets, also known as rocky planets or telluric planets, are planets that are primarily composed of silicate rocks or metals. In contrast to gas giants, which are primarily composed of hydrogen and helium, terrestrial planets have a solid surface layer and a central core that is made up of metal. Mercury, Venus, Earth, and Mars are the four terrestrial planets in our solar system.
The geology of the terrestrial worlds is therefore dependent on a variety of factors, which include factors such as the planet's size, distance from the Sun, and its history of volcanic activity.
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would you expect as many impact craters per unit area on the surface of venus as on the surface of mars? why or why not?
The answer to this question is no, we would not expect as many impact craters per unit area on the surface of Venus as on the surface of Mars. The reason for this is because Venus has a much thicker atmosphere than Mars, which acts as a shield that protects the surface of the planet from incoming objects.
Additionally, Venus has a much stronger gravity than Mars, which pulls objects that enter the atmosphere back towards the planet rather than letting them reach the surface. This further reduces the amount of impact craters on the surface of Venus.
In comparison, Mars has a much thinner atmosphere, which does not provide as much protection from incoming objects. The weaker gravity also means that objects that enter the atmosphere have a much better chance of reaching the surface of the planet. This contributes to more impact craters forming on the surface of Mars.
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you see an igneous rock next to sandstone, and notice that the sandstone appears discolored and a bit baked along contact. what can you imply about the ages of the 2 rock units
If an igneous rock is in contact with sandstone and the sandstone appears discolored and baked, it can be inferred that the igneous rock is younger than the sandstone.
This is because the heat and pressure generated by the intrusion of the molten igneous rock would have altered the sandstone, creating a zone of contact metamorphism. The high temperatures of the molten rock would have caused the minerals in the sandstone to recrystallize and fuse together, leading to a change in texture and color. This type of contact metamorphism occurs when an intrusion of magma or lava comes into contact with cooler rocks and is a useful tool in determining the relative ages of rocks in an area.
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a major driving mechanism of the moc is the sinking of water in the north atlantic. this begins with the formation of . as ocean water freezes, ice crystals exclude salt and the salinity of the surrounding water increases.
The major driving mechanism of the MOC (Meridional Overturning Circulation) is the sinking of water in the North Atlantic.
This begins with the formation of sea ice. As ocean water freezes, ice crystals form and the salt that is excluded from the crystals increases the salinity of the surrounding water, which causes it to become denser and sink.
Meridional Overturning Circulation (MOC) is a north-south (meridional) overturning circulation in the sea calculated by zonal accumulation (east-west) of the amount of water mass transport in depth or density layers.
This somersault circulation occurs in the North Atlantic, away from the subpolar regions, the MOC (which is in principle an observable quantity) is often identified with the thermohaline (THC) circulation, which is more of a conceptual interpretation.
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why might this be? (hint: what processes in both living and dead trees produce co2 ?) tropical rain forests also produce co2 due to living trees' respiration and decomposition of dead trees. due to this fact, relative consumption of co2 is not as great as has been expected.
Tropical rain forests produce CO2 due to both the respiration of living trees and the decomposition of dead trees. This leads to a lower relative consumption of CO2 than is expected.
Both living and dead trees contribute to the production of carbon dioxide (CO2) through respiration and decomposition processes. Living trees release CO2 through cellular respiration, which is the process by which they use oxygen to convert sugars into energy. Dead trees also release CO2 as they decompose, either through the action of microorganisms or through physical processes like wind and erosion.
While it's true that tropical rainforests produce CO2 through respiration and decomposition, they also play an important role in removing CO2 from the atmosphere through photosynthesis. Trees absorb CO2 from the air and use it to build their cells and grow, releasing oxygen as a byproduct. This process helps to offset the CO2 produced by other sources, such as human activities.
However, the extent to which tropical rainforests are able to absorb and sequester CO2 depends on a variety of factors, including the density and diversity of the forest, the health of the trees, and the availability of nutrients and water. Additionally, deforestation and other human activities that destroy or disrupt rainforest ecosystems can greatly reduce their ability to act as carbon sinks.
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which must be true if mars was warmer and wetter in the past? group of answer choices mars was once much closer to the sun. mars once had a much thicker atmopshere mars must somehow have avoided the effects of the heavy bombardment. the sun was much brighter when it was younger.
If Mars was warmer and wetter in the past, the following must be true: Mars once had a much thicker atmosphere. The correct option is "Mars once had a much thicker atmosphere.
Mars is a terrestrial planet that is the fourth from the Sun in the Solar System. Mars is smaller than Earth, but it is still one of the planets that scientists are interested in exploring. It is a cold and desert-like planet now, but it was once warmer and wetter.
The atmosphere of Mars is one of the primary reasons for its present-day state. The Martian atmosphere is very thin and has a lower pressure than Earth's atmosphere.
Mars' magnetic field was destroyed four billion years ago by an intense solar storm, leaving the planet unprotected from the Sun's radiation. Mars has a thinner atmosphere today than it did in the past.
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temperature, pressure, wind and moisture are measured through the depth of the troposphere by what instrument? group of answer choices rawinsonde doppler radar goes satellite
Temperature, pressure, wind and moisture are measured through the depth of the troposphere using Rawinsonde instrument.
Rawinsonde is an instrument used to measure various meteorological parameters, including wind, temperature, and humidity. Rawinsonde is a balloon-borne instrument that is released into the air, and it sends back data as it rises. The balloon can rise to an altitude of around 100,000 feet before bursting, and the Rawinsonde instrument falls back to Earth. The data from the instrument are used to create a sounding, which is a profile of the atmosphere's temperature, pressure, and humidity as a function of altitude. The troposphere is the region of the atmosphere that is closest to the surface. It extends from the Earth's surface up to about 7-20 kilometers, depending on the latitude. The Rawinsonde instrument is used to measure the various meteorological parameters in the troposphere.
The Rawinsonde instrument consists of a weather balloon that is filled with helium gas. The balloon is released from the surface, and it rises through the atmosphere. As the balloon rises, the Rawinsonde instrument collects data on various meteorological parameters, including wind, temperature, and humidity. The data collected from the instrument are used to create a sounding, which is a profile of the atmosphere's temperature, pressure, and humidity as a function of altitude.
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he san andreas fault is... group of answer choices associated with deep focus earthquakes a world-famous example of a hot spot is an intraplate fault within the juan de fuca plate an oceanic transform fault a continental transform fault
The San Andreas Fault is a continental transform fault, which is a type of fault that occurs at the boundary between two tectonic plates.
The San Andreas Fault marks the boundary between the Pacific Plate and the North American Plate. The two plates slide past each other horizontally in opposite directions. As the plates move, they cause earthquakes with deep focus, which are powerful earthquakes that occur far beneath the surface.
An example of a world-famous hot spot is the Hawaii Islands, which form due to magma rising up from the Earth's mantle. This is a form of intraplate volcanism, which occurs at locations that are not on tectonic plate boundaries. In contrast, transform faults are located on plate boundaries, and the San Andreas Fault is a prominent example.
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E. Explain ONE challenge a representative might face in connecting with rural constituents as
compared with constituents in urban areas.
Answer:
One challenge a representative might face in connecting with rural constituents as compared with constituents in urban areas is the issue of geographic distance. Rural areas are often more spread out and have lower population densities than urban areas, which can make it more difficult for representatives to physically reach their constituents. This can make it harder for representatives to hold town hall meetings, attend community events, and meet with constituents one-on-one. Additionally, rural areas may have limited access to technology and internet connectivity, which can make it harder for representatives to communicate with their constituents through email, social media, and other digital channels. As a result, representatives may need to be more creative in finding ways to connect with their rural constituents, such as holding virtual town hall meetings or partnering with local organizations to reach out to rural communities.
the primary reason why north america has a high number of, and certainly much more than its global share, severe thunderstorms, is the:
The primary reason why North America has a high number of severe thunderstorms is the collision of air masses.
North America is located in an area where cold air from Canada meets warm, moist air from the Gulf of Mexico. This creates a boundary called a "front" where the two air masses collide, causing the warm air to rise rapidly and form thunderstorms. This collision of air masses occurs frequently in North America, leading to a high number of severe thunderstorms. Additionally, the geography of North America, with its varied topography and large bodies of water, creates ideal conditions for the formation of thunderstorms.
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the giant planet that has an axis that points roughly straight up, and thus has no seasons to speak of, is:
The giant planet that has an axis that points roughly straight up, and thus has no seasons to speak of, is Uranus.
Uranus is the giant planet that has an axis that points roughly straight up, and thus has no seasons to speak of. Uranus is the seventh planet from the Sun, and it was the first to be discovered by means of a telescope. It's also the third-largest planet in terms of diameter, and it's the fourth-most massive.
Uranus is also distinctive in that it is the only planet in the solar system that has an axis that is nearly perpendicular to the plane of its orbit. In addition, Uranus is primarily composed of hydrogen, helium, and methane, which accounts for its pale blue color. Uranus' atmosphere contains bands of clouds that are made up of methane crystals. The planet also has an extensive system of rings and a multitude of moons orbiting it.
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explosive volcanoes tend to occur at which type of plate boundary?
Explosive volcanoes tend to occur at convergent plate boundaries.
Volcanoes that erupt explosively are known as explosive volcanoes.
These volcanoes eject ash, gas, and rocks high into the air during their eruptions, resulting in the formation of pyroclastic flows, which are dense collections of hot ash, rock fragments, and gas that flow down the slopes of the volcano.
A boundary where two tectonic plates come together and interact is known as a convergent plate boundary.
Convergent plate boundaries are characterized by the fact that one plate is typically forced beneath the other as they collide, resulting in the formation of a subduction zone.
Explosive volcanoes tend to occur at convergent plate boundaries. At convergent plate boundaries, two plates come together, and one is forced beneath the other.
When the lower plate sinks into the hot mantle, it causes melting, and this molten rock rises to the surface, forming a volcano.
The most explosive volcanoes are those that occur at subduction zones because the magma that rises to the surface is rich in water and other volatile elements, making it more explosive when it reaches the surface.
Some examples of explosive volcanoes include Mount St. Helens in the United States, Mount Fuji in Japan, and Mount Pinatubo in the Philippines.
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this week, the biden administration approved a controversial oil drilling project called the willow project in what u.s. state?
Alaska
Loa Angels
Paris
Munich
The controversial oil drilling project called the Willow project has been approved by the Biden administration, which will be located in the US state of Alaska. The correct option is Alaska.
The Willow project is a proposed oil drilling project by the US oil company ConocoPhillips. The company plans to develop the project on Alaska's North Slope. The Willow project includes the construction of five drill sites, an airstrip, about 28 miles of ice roads, and 85 miles of pipelines, among other facilities. The Willow project is a controversial project because it could harm the wildlife and habitat of the area.
Moreover, environmentalists argue that the project's carbon footprint will contribute to climate change, a matter of global concern. Therefore, environmentalists and other groups are opposing the Willow project, and some have even sued the US government to halt the project. Nonetheless, the Biden administration has approved the Willow project. Alaska is the US state where the Biden administration approved a controversial oil drilling project called the Willow project.
Alaska is the northernmost state of the United States of America. It is the largest state of the country by area and is the 3rd least populated state. Alaska is famous for its rugged, remote wilderness areas, glaciers, mountains, abundant wildlife, and hunting and fishing opportunities. The correct option is Alaska.
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despite having a lower global warming potential and a shorter residence time in earth's atmosphere, co2 is the most important radiative forcing behind global warming because -
CO2 is the most important radiative forcing behind global warming because it is the most abundant of all the greenhouse gases in the atmosphere and its residence time in the atmosphere is very long.
This allows it to accumulate and persist over a long period of time, and so its radiative forcing effect is greater than other greenhouse gases with a lower global warming potential and a shorter residence time.
While other greenhouse gases, such as methane and nitrous oxide, have a greater warming potential, they are present in much smaller quantities in the atmosphere than CO2.
Furthermore, CO2 emissions have been increasing steadily due to human activities such as burning fossil fuels and deforestation, leading to a buildup of CO2 in the atmosphere over time
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which of the following climate types is found at the highest latitudes? marine west coast humid subtropical subtropical steppe mediterranean midlatitude desert
The climate type found at the highest latitudes is marine west coast.
What is climate?
Climate is the long-term forecast of a particular region or location's average temperature, humidity, and rainfall. A range of meteorological variables, including temperature, rainfall, atmospheric pressure, and winds, contribute to the world's different climates.
The marine west coast climate is a climate type that is found at the highest latitudes. A marine west coast climate is a type of oceanic climate, which is found in the western portions of the subtropical and middle latitudes. It is typically characterized by moist air masses with high rainfall amounts and mild to cool temperatures. Marine west coast climate is the typical climate in most areas of western Europe, as well as in the Pacific Northwest region of North America. The following are the key features of a marine west coast climate:
Mild winters, with an average temperature above freezing and little to no snowfall.Average temperatures in the summer are cool, with highs averaging in the mid-60s (18-20 °C).Year-round precipitation, with frequent rainy and cloudy days. The average yearly precipitation is more than 50 inches (1,250 mm).Foggy conditions are common, especially near the coast, which may result in low visibility.To know more about highest latitudes climate refer here:
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QUIZ:
Differing Viewpoints answers
1. corruption and ethnic conflict
2. ethnic conflict
3. pollution of the air and destruction of plants and animals
4. iron ore diamonds and natural gas
5. palm oil
6. exploiting the colonies for profit
7. Portugal
8. Central African Republic
9. Men and women eat in separate rooms.
10. poor transportation system,
limited educational system and minimal modern health care. your welcome :)
The main circumstance which most Central African nations experienced since gaining independence is problem of corruption and ethnic conflict. The Option 1 is correct.
How do corruption and ethnic conflict affect Central African nations?Corruption has been a major issue in many African countries, with government officials and business leaders embezzling public funds and engaging in other forms of corrupt practices. This has led to widespread poverty, economic stagnation, and political instability.
Ethnic conflict has also been a recurring problem in many Central African nations, often fueled by political or economic competition between different groups. These conflicts have led to displacement, violence, and loss of life.
Also, poor transportation systems, lack of infrastructure, and other development challenges have also been prevalent issues in the region. While some countries have experienced resource booms from minerals such as diamonds and natural gas, many have struggled to benefit from their natural resources due to corruption and mismanagement.
Full question "Which circumstances have most Central African nations experienced since gaining independence? 1. corruption and ethnic conflict 2. ethnic conflict 3. pollution of the air and destruction of plants and animals 4. iron ore diamonds and natural gas 5. palm oil 6. exploiting the colonies for profit 7. Portugal 8. Central African Republic 9. Men and women eat in separate rooms. 10. poor transportation system"
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berkeley, ca has the highest amount of precipitation during the question 36 options: summer. autumn. winter. spring.
Berkeley, CA has the highest amount of precipitation during winter.
What is precipitation?Precipitation refers to the process by which water vapors in the atmosphere are converted into water droplets and fall to the ground as rain, snow, hail, or sleet. Precipitation can be further classified into three types: convective precipitation, orographic precipitation, and frontal precipitation.
These types of precipitation have different causes and occur under different circumstances. Precipitation is essential for the growth and survival of plants, animals, and humans. Precipitation also plays an important role in shaping landscapes and ecosystems.
The climate of Berkeley, CAThe climate of Berkeley, CA, is Mediterranean, with mild, wet winters and dry summers. In winter, the average temperature is around 11°C (52°F), while in summer, it is around 18°C (64°F). The average annual precipitation in Berkeley is around 62.2 cm (24.5 in).
The wettest months are November through March, while the driest months are June through September. The temperature in Berkeley is mild throughout the year, with little variation from month to month. Overall, Berkeley has a pleasant climate that is ideal for outdoor activities and tourism.
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precipitation of gypsum due to evaporation of seawater produces which kind of sedimentary rock? group of answer choices biochemical chemical clastic organic
Clastic sedimentary rock is formed when precipitation of gypsum due to evaporation of seawater occurs.
Clastic sedimentary rock is formed when fragments of pre-existing rocks or minerals are compacted and cemented together. Clastic sedimentary rocks are formed from the accumulation and consolidation of fragments of pre-existing rocks or minerals, which are transported and deposited by various agents such as water, wind, or ice. Examples of clastic sedimentary rocks include sandstone, shale, and conglomerate.
Gypsum is a mineral that can be precipitated from evaporating seawater, but it does not form clastic sedimentary rock. Gypsum can form chemical sedimentary rocks, such as rock gypsum or alabaster.
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which of the following are types of pyroclastic debris? choose one or more: a. lapilli b. lava c. blocks d. ash e. magma f. gas g. lahar
The types of pyroclastic debris include the following: a) lapilli, d) ash, c) blocks, and g) lahars.
What are Types of Pyroclastic Debris?Lapilli are small fragments of volcanic debris with a size range between 2 mm to 64 mm. Ash is fine volcanic debris with a size less than 2 mm. Blocks are large, solid pieces of volcanic material that can be greater than 64 mm.
Lahars are mudflows composed of volcanic material mixed with water. Lava, magma, and gas are not considered pyroclastic debris since they are not ejected explosively during volcanic eruptions but rather flow out of the volcano in a more controlled manner.
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why cant scientists use carbon-14 to determine the age of a fossil older than 100,000 years
Explanation:
Because of the short length of the carbon-14 half-life, carbon dating is only accurate for items that are thousands to tens of thousands of years old. Most rocks of interest are much older than this. Geologists must therefore use elements with longer half-lives.
Answer: Because of the short length of the carbon-14 half-life, carbon dating is only accurate for items that are thousands of years old. Most rocks that scientists study are much older than thousands.
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biochemical sedimentary rocks are composed of the shells of dead organisms, but organic sedimentary rocks are composed of . choose one: a. bones of dead organisms b. tracks and burrows of dead organisms c. organic material/compounds of dead organisms d. living organisms
Biochemical sedimentary rocks are composed of the shells of dead organisms, but organic sedimentary rocks are composed of organic material/compounds of dead organisms. Therefore the correct option is option C.
Sedimentary rocks are the types of rocks that are formed when existing rocks or minerals are broken down into tiny pieces or dissolved in water and later deposited. When these sediments or deposits are cemented and compacted, they form sedimentary rocks.
Sedimentary rocks comprise the majority of the earth's crust and cover over 75 percent of the earth's surface. They are divided into three types based on their formation process: chemical, organic, and clastic.
The chemical and organic types are known as non-clastic sedimentary rocks. Organic sedimentary rocks are formed by the accumulation of organic material that has been preserved or altered in some way. Therefore the correct option is option C.
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the largest earthen structure in north america, outside of mexico, is found at the site of .
The largest earthen structure in North America, outside of Mexico, is found at the site of Cahokia.
Cahokia is a UNESCO World Heritage site located in southern Illinois. It is known for its earthen mounds and was once the largest pre-Columbian settlement north of Mexico.
The city was built by the Mississippians, a Native American civilization that flourished in the Mississippi River valley from around 800 to 1500 AD.
The largest mound at Cahokia, known as Monks Mound, is a massive earthen structure that stands 100 feet tall and covers 14 acres of land.
It was likely used for ceremonial purposes and is believed to have been the focal point of the city. Other notable mounds at Cahokia include the Grand Plaza, which was likely used for public gatherings and ceremonies, and the Woodhenge, a circular arrangement of posts that may have been used for astronomical observations.
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can you identify the minerals that comprise igneous rocks? drag the appropriate labels to their respective targets. the specific colors of the referenced mineral crystals within the rocks have been supplied to assist you. labels will only be used once, and not all labels will be used.\
Igneous rocks are made up of different minerals depending on the type of rock. The most common minerals found in igneous rocks are quartz, feldspar, mica, hornblende, and pyroxene. Quartz is usually colorless or white, feldspar can be white, pink, or gray, mica can range from green to brown to black, hornblende is usually black or green, and pyroxene is usually black.
Granite is an example of an igneous rock that contains quartz, feldspar, mica, and hornblende. Basalt is an example of an igneous rock that contains feldspar, pyroxene, and sometimes olivine. Peridotite is an example of an igneous rock that contains olivine, pyroxene, and sometimes hornblende.
The minerals in igneous rocks can be identified using a variety of methods including color, hardness, streak, luster, and cleavage. Color can be used to distinguish between different minerals; quartz is usually colorless or white, feldspar is usually pink, gray, or white, mica is usually green, brown, or black, hornblende is usually black or green, and pyroxene is usually black.
Hardness is another way to distinguish between different minerals. Quartz is the hardest mineral and has a hardness of 7 on the Mohs scale. Feldspar is slightly softer with a hardness of 6, mica has a hardness of 2-3, hornblende has a hardness of 5-6, and pyroxene has a hardness of 5-6.
The streak of a mineral is the color it leaves when scratched on a streak plate. The streak of quartz is white, the streak of feldspar is white or gray, the streak of mica is white, the streak of hornblende is black, and the streak of pyroxene is black.
Luster is another way to identify different minerals. Quartz has a vitreous luster, feldspar has a pearly or dull luster, mica has a pearly or silky luster, hornblende has a vitreous or pearly luster, and pyroxene has a vitreous or dull luster.
The cleavage of a mineral is how it breaks when it is struck or compressed. Quartz has no cleavage, feldspar has two directions of cleavage, mica has one direction of cleavage, hornblende has two directions of cleavage, and pyroxene has two directions of cleavage.
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(multiple choice) the geologic material(s) most commonly associated with earth failures are .
The geologic materials most commonly associated with earth failures are clay minerals. option 2 is correct.
Clay minerals: clay mineral is natural or synthetic, might include non-phyllosilicates, without size criterion, plastic, and hardens on drying or firing. The clay minerals consist of essential elements like silica, magnesia or alumina, or both, and water, but iron substitutes for aluminum and magnesium in varying degrees, and appreciable quantities of potassium, calcium, and sodium are frequently present as well.
Geological materials are the material extracted as-is from the earth in sediment or rock form, including rocks, sands, clays, limestone, and other industrial minerals. Earth failures are falling, exfoliating, sliding, and toppling.
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The complete question is -
The geological materials most commonly associated with earth failures are?
options
1. quartz
2. clay minerals
3. granite
4. basalt
Two agricultural practices related to each biome
Prairies are the most valuable biome for agriculture in light of the fact that the dirt is by and large profound and fruitful. Very nearly one billion individuals depend on prairies for their occupation or as a food source.
"Arable cultivating" and "Peaceful cultivating" are the two fundamental kinds of agribusiness in light of the accessibility of land. Arable cultivating: This is the development of harvests, for the most part on complement land where the dirt is of more excellent.
Most unmodified prairies are utilized for broad domesticated animal creation, with fire and brushing the essential administration apparatuses.
There are five significant sorts of biomes: amphibian, prairie, timberland, desert, and tundra, however, a portion of these biomes can be additionally partitioned into additional particular classifications, like freshwater, marine, savanna, tropical rainforest, mild rainforest, and taiga. Amphibian biomes incorporate both freshwater and marine biomes.
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In the event that two glaciers collide, their advancing glacial till meets in the middle as a __________ moraine.
In the event that two glaciers collide, their advancing glacial till meets in the middle as a MEDIAL moraine.
A medial moraine refers to a linear ridge that forms when two glaciers merge or conjoin together. The medial moraine, which is also referred to as the median moraine, runs down the middle of the newly created glacier. A medial moraine may consist of debris that originated from either of the merging glaciers or from the glacial bedrock.
When two glaciers combine, the dirt and rocks on both glaciers combine to form a medial moraine. This linear ridge is generally found in the middle of glaciers, and it can often be seen as a dark line or stripe down the center of a glacier. Medial moraines are formed when two glaciers merge or converge. As the glaciers move closer to one another, they begin to push and shove the rocks and debris that have been trapped within them for years. These rocks and debris are then pushed to the center of the glacier, where they begin to pile up and form a linear ridge known as a medial moraine.
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