The Cenozoic fossil record of North America reveals that the climate was changing significantly over the era. During the Paleocene and Eocene, temperatures were generally warmer than today and the climate was relatively wet. As the Eocene transitioned into the Oligocene, temperatures began to cool.
By the end of the Miocene, temperatures began to cool again, resulting in the formation of glaciers in the northern part of the continent. This period of cooling and drying continued through the Pliocene and Pleistocene.
By the end of the Pleistocene, temperatures were much cooler and the climate was dry, resulting in the onset of the modern glacial age. These fluctuations in climate over the Cenozoic era reveal the dynamic nature of Earth’s climate system.
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Which of the layers in the atmosphere do temperatures vary the most?
Answer:
The Troposphere
Explanation:
It has most of our weather like rain, snow, and clouds. On this part of the atmosphere, the temp gets cold as the amount of space above the earth increases.
The Phoenician script differs from other ancient scripts like Linear-A, Cuneiform and Hieroglyphs in thatA. it is alphabetic, meaning that each character represents a letter rather than a syllable or word.B. it is pictorial, meaning that each character represents a concept.C. it is cursive, meaning that the letters are joined together.D. it is syllabic, meaning that each character denotes a syllable O Sicily
The Phoenician script differs from other ancient scripts like Linear-A, Cuneiform and Hieroglyphs in that it is alphabetic, meaning that each character represents a letter rather than a syllable or word. Therefore, the correct answer is option A.
The Phoenician script was developed in the ancient city-state of Phoenicia, which is now Lebanon. It was one of the earliest writing systems and was used to write the Phoenician language. The script was also adapted by other languages, such as Hebrew and Aramaic.
Unlike pictorial scripts like hieroglyphs, which used pictures to represent concepts, the Phoenician script used letters to represent sounds. This made it a more efficient system for recording language. The Phoenician script was also different from cursive scripts like Linear-A, which were written in a flowing, connected style. Therefore, the correct answer is option A.
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1 pts as erosion strips off the tops of mountains, the mountains will "bob" upward. this is an example of
This phenomenon is known as isostatic rebound. Isostatic rebound occurs when the pressure exerted by the overlying material is relieved, usually caused by erosion. It is believed that this process occurs due to the removal of material, such as ice or sediment, from the upper layers of the mountain.
As this material is removed, the weight of the mountain decreases, causing the mountain to slowly “bob” upwards. This process is gradual and can take hundreds or even thousands of years to fully complete. Isostatic rebound plays an important role in the overall geology of a region, and can often result in dramatic landscape changes. For example, recently glaciated areas are often characterized by low relief, whereas regions that have experienced isostatic rebound often have steep terrain.
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which element is found in greater amounts in low viscosity magma, than in high viscosity magma? question 12 options: a) si b) fe
Si (Silica) is found in greater amounts in low viscosity magma, than in high viscosity magma. Option A is correct answer.
High silica content magmas will consequently show higher levels of polymerization and have higher viscosities than magmas with low silica concentration. A substance's viscosity is a measurement of its consistency. A substance's viscosity is defined as its capacity to resist flow. Viscosity is, in some ways, the inverse of fluidity. Because cold molasses is less fluid than water, it has a greater viscosity.
The temperature, composition, and gas concentration of a magma all influence its viscosity. The relationship between temperature and viscosity is self-evident. The greater the temperature, like with most liquids, the more fluid the material becomes, reducing its viscosity.
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a characteristically distinct collection of a sediment or feature and its corresponding artifacts is known as what?
An assemblage is a characteristically distinct collection of a sediment or feature and its corresponding artifacts.
An assemblage is a collection of materials from an archaeological site or a series of sites that were excavated. An assemblage, as a term, refers to a collection of artifacts discovered in a single location or region, such as a settlement or archaeological site. The term "assemblage" refers to the materials used by archaeologists to reconstruct human behaviour and culture from the past. An assemblage is frequently used to learn about the life and activities of a particular culture or civilization at a specific moment in time.
For example, an archaeological excavation may have yielded an assemblage of pottery, tools, and human remains. This assemblage could be utilized to learn about the everyday life, traditions, and culture of the people who lived in the area where the excavation was conducted.
An archaeological assemblage, for example, may be a collection of items discovered at a specific site that may be interpreted as having been produced or utilized by the same group of people. An assemblage is frequently used to determine the nature of a cultural site, its occupation duration, and the range of its cultural features. The dating of these features may help to establish a chronological sequence of cultural activity, which may then be used to investigate social and cultural development.
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which term describes a soil that remails in place after having formed by weathering of the underlying bedrock? residual relict transformational transported
The term that describes soil that remains in place after having formed by weathering of the underlying bedrock is residual soil.
What is residual soil?
Residual soil, also known as residuum, is soil that forms from the weathering of bedrock that has remained in place. This soil is formed by in situ weathering and usually remains where it is formed. The weathering processes cause the bedrock to disintegrate into small particles, resulting in the formation of residual soil.
Residual soils are usually found on slopes and hilltops, where weathering is highest, and are often composed of coarse particles due to the intense weathering that occurs. They are generally thick and can be of varying depths depending on the bedrock they have formed from. The soil is typically rocky and nutrient-poor, which limits plant growth. Residual soils are classified as 4th-order soils according to the Soil Taxonomy. The Soil Taxonomy ranks soils into 12 orders based on their characteristics.
Residual soil is soil that forms from the weathering of bedrock that has remained in place.
Residual soils are usually found on slopes and hilltops, where weathering is highest. They are typically rocky and nutrient-poor. Residual soils are classified as 4th-order soils according to the Soil Taxonomy.
The word used to describe soil that stays in its original place after being formed by the weathering of the underlying bedrock is "residual soil".
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the picture depicts a cross-section through a hurricane. which location would have the highest wind speeds?
Pressure remains lowest in the storm's eye and rises as it moves outwards. The pressure gradient is very steep along the eyewall.
Windspeed remains highest at the eye walls, and slightly higher on the hurricane's moving side of the wall.
Rainfall can be seen on the hospital rain bands and the eyewall. The eye is always warm.
Strom surge was high on the side of the wall where the hurricane-force wind was blowing.
During the winter months of the Northern Hemisphere, the Arctic is one of the coldest and darkest places on Earth.
Following the September equinox, the Earth's tilted axis and revolution around the sun reduce the amount of light and heat reaching the Arctic until no sunlight reaches the region.
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at night, the air above the mountain slopes and drains into the warm valley below, creating a .
At night, a process called radiation cooling causes the air on the mountain slopes to cool more quickly than in the valley below. This creates a temperature inversion, where the air temperature at the top of the mountain is cooler than at the base.
The temperature inversion also has other effects, such as creating a stable layer of air that traps pollutants near the ground and limits visibility. Additionally, the process helps to distribute moisture more evenly throughout the environment.
This is a vital part of many mountain ecosystems, and an important factor to consider when studying climate patterns and air quality in mountainous areas.
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Put the stages of solar system formation in order chronologically, where "1" means it happened first and "5" means it happend last.
- 1. 2. 3. 4. 5.
Proto-Sun’s heat bakes disk, establisning oxide, soot, and frost lines.
- 1. 2. 3. 4. 5.
Planets encounter instabilities and migrate (change orbits).
- 1. 2. 3. 4. 5.
Collapsing gas cloud forms a disk shape.
- 1. 2. 3. 4. 5.
Planets begin growing from grains and planetessimals.
- 1. 2. 3. 4. 5.
Solar fusion "turns on" and blows away the gas via the solar wind.
How did Earth get most of its water?
a. Some icy bodies were formed inside the frost line, despite the heat.
b. Asteroid collisions on Jupiter blasted icy bodies into the inner Solar System.
c. It was bombarded with icy objects deflected into the inner Solar System soon after its formation.
d. It formed just outside the frost line and later migrated to its present orbit under the influence of Jupiter.
Typos and irrelevant parts of the question should be ignored. Put the stages of solar system formation in order chronologically, where "1" means it happened first and "5" means it happened last.
The correct order of the stages of solar system formation in order chronologically is given below:
1. Collapsing gas cloud forms a disk shape.
2. Proto-Sun’s heat bakes disk, establishing oxide, soot, and frost lines.
3. Planets begin growing from grains and planetesimals.
4. Planets encounter instabilities and migrate (change orbits).
5. Solar fusion "turns on" and blows away the gas via the solar wind.
It was bombarded with icy objects deflected into the inner Solar System soon after its formation is how Earth got most of its water. The correct option is C. It was bombarded with icy objects deflected into the inner Solar System soon after its formation.
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Assuming the sand dune (illustrated below) was deposited by wind currents 200 million years ago, which way was the wind blowing?Image: similar to the pair&share photo of the Jurassic Navajo Sandstone in Utah from the "Play in the Mud (and Sand)" lectureA) wind was blowing from the left to rightB) wind was blowing from right to leftC) wind was blowing both waysD) can't determine from the information given
The sand dune (illustrated below) was deposited by wind currents 200 million years ago, which way was the wind blowing wind was blowing from right to left. The correct answer is B) the wind was blowing from right to left.
To determine the wind direction, we need to analyze the sand dune's structure. Sand dunes have two distinct sides: the windward side and the leeward side. The windward side is the side facing the wind, and it has a gentle slope. The leeward side is the side sheltered from the wind, and it has a steeper slope.
In this case, we can see that the left side of the dune has a steeper slope, while the right side has a more gentle slope. This indicates that the wind was blowing from the right, carrying sand grains up the gentle slope on the right side of the dune. Once the wind reached the top of the dune, it lost its carrying capacity, causing the sand grains to fall and accumulate on the steeper left side of the dune, forming the leeward side.
So, considering the structure of the sand dune and the slopes, we can conclude that the wind was blowing from right to left 200 million years ago when the sand dune was deposited. The correct answer is B) the wind was blowing from right to left.
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water velocity in a stream varies based on many factors but is usually greater at the mouth than the head. which part of a stream commonly has the highest gradient?
Water velocity in a stream varies based on many factors but is usually greater at the mouth than the head. The part of a stream commonly having the highest gradient is head.
Stream is defined as a body of water, running or moving continuously in a channel or course of considerable width and length. There are a number of different types of streams, each characterized by its size, location, and water velocity.
Some of the important factors that affect water velocity in a stream include the slope of the land, the amount of water in the stream, the shape of the streambed, and the type of sediment in the streambed.
Water velocity is the speed of water in a stream or river. It is the distance the water travels over a particular period of time. Water velocity in a stream is influenced by many factors such as the streambed, the shape of the channel, the amount of water in the stream, and the slope of the land, among others.
Gradient refers to the steepness or slope of a stream channel. The highest gradient in a stream is found at the head. The head is the point where the stream begins or the location where the stream gets its water. As the stream flows downstream, the gradient decreases, and the water velocity decreases.
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the soil horizon containing only organic material is the a horizon. b horizon. c horizon. o horizon. e horizon.
The soil horizon containing only organic material is the O horizon.
What is the O horizon?
The O horizon, which is the soil layer containing the most organic matter, is also known as the organic layer. The organic layer includes both live and dead plant roots and decomposed plant and animal residues.
This horizon can be very thin in some soils or as much as several meters thick in some organic soils. Because of its abundance of organic matter, the O horizon is often dark in color and has a spongy texture. This soil layer is sometimes known as the surface layer.The O horizon is found in soils that have experienced natural soil formation over a long period of time. The development of this layer of soil is affected by a variety of factors, including climate, vegetation, and the underlying bedrock, which all play a role in soil development. The soil's pH level and other chemical properties can also affect the amount of organic matter present in the O horizon. Additionally, human activity can affect the development and composition of this soil layer.
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LICs receive more income when wealthy people from HICs want to visit their unspoiled natural landscape and culture. What is this called?
LICs receive more income when wealthy people from HICs want to visit their unspoiled natural landscape and culture is called tourism.
What is tourism?Tourism refers to the activity of people traveling to and staying in places outside their usual environment for leisure, business, or other purposes. It involves the visiting of new places, experiencing different cultures and traditions, and engaging in various recreational activities.
When wealthy people from high-income countries (HICs) visit low-income countries (LICs) to experience their unspoiled natural landscape and culture, it can generate significant income for the LICs through the tourism industry. This can include revenue from activities such as lodging, transportation, food and beverages, and various attractions and experiences.
The phenomenon you are referring to is called tourism.
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when we see venus in its full phase, what phase would earth be in as seen by a hypothetical venetian? group of answer choices first quarter new waning crescent full third quarter
If we see Venus in its full phase, Earth would appear as a new phase to a hypothetical Venetian. The answer is first quarter.
What is the meaning of the term "full phase"?
The term "full phase" refers to the time when the planet is positioned behind the Sun in the Earth-Sun-planet alignment. This alignment causes the planet to appear fully illuminated from Earth’s point of view because it reflects all of the sunlight that is falling on its surface.
The orbital path of Venus is smaller than that of Earth because it is closer to the Sun. When Venus is on the far side of the Sun (as viewed from Earth), we can see its full illuminated face.
At that moment, the Sun-Earth-Venus angle is 180 degrees, and Venus is on the opposite side of the Sun from the Earth.
Hence, when we see Venus in its full phase, Earth would appear as a new phase to a hypothetical Venetian. The answer is first quarter.
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which of the following is not a low-latitude climate region? mansoon wet equatorial dry tropical tropical savanna humid subtropical
Answer: A low latitude climate is a tropical climate, exemplified by areas in or near the equator.
as planet mercury formed, temperatures in this region were around 1400k. thus mercury formed out of...
As the planet Mercury formed, temperatures in this region were around 1400K.
Thus, Mercury formed out of material that had a high melting point. The most abundant elements were metals such as iron (Fe), nickel (Ni), and silicon (Si).
This is because the melting point of these elements is high enough to withstand the high temperature in the region. These elements, particularly iron, dominated the formation of Mercury.
In fact, the planet's density is the second-highest in the solar system, after Earth, which suggests a substantial metallic core.
According to the Giant impact hypothesis, Mercury was formed after a Mars-sized body collided with the early Earth.
The debris from the impact was scattered into space and coalesced into a hot planetesimal which eventually became Mercury.
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compaction and cementation are two common processes of erosion. transportation. deposition. lithification.
Compaction and cementation are two processes involved in lithification, which is the process of turning sediment into sedimentary rock. Compaction is the process by which sediment grains are pressed together due to the weight of overlying material.
The overlying material can be either water or other sediment, and compaction is the main process that creates sedimentary rocks. Cementation is the process by which sediment grains become bound together by the precipitation of mineral cement.
This cement is usually some form of calcium carbonate, such as calcite, and it helps to solidify and bind sediment grains together. Compaction and cementation are important processes for creating sedimentary rocks, and they occur along with other processes such as erosion, transportation, and deposition. Together, these processes are responsible for the formation of sedimentary rocks, which are some of the most common rocks found on Earth.
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choose the statement that best describes foliation. choose one: a. the texture typical of all metamorphic rocks b. an arrangement of mineral grains such that most are of the same size and shape c. an alignment of mineral grains perpendicular to the direction of compression d. an alignment of mineral grains parallel to the direction of compression
Answer:
d. An alignment of mineral grains parallel to the direction of compression describes foliation.
Explanation:
Foliation is a characteristic feature of many metamorphic rocks, and it refers to the alignment of mineral grains or other constituents in parallel planes or layers. This alignment is typically a result of the application of directed pressure or compression during the metamorphic process, which causes the mineral grains to flatten and orient in the same direction. The resulting texture can give the rock a layered or banded appearance and can also affect its physical properties such as its strength and cleavage.
what does the existence of machu picchu suggest about the power of the inca king?
The existence of Machu Picchu suggests that the Inca king or emperor, Pachacuti Inca Yupanqui, had significant power and resources at his disposal. Machu Picchu is an ancient Inca citadel located in the Andes Mountains of Peru
It is thought to have been constructed in the middle of the 15th century as a royal estate for Pachacuti Inca Yupanqui. It is reasonable to assume that the Inca king had the strength and authority to command the necessary materials and labor force given the amount of labor, resources, and organization required to build such a monumental and elaborate structure in a remote and inaccessible location. Additionally, Machu Picchu's strategic location, with a view of the Urubamba River Valley, may have represented Inca power and control over the neighboring lands symbolically.
However, it's important to note that there are still many unanswered questions about the function and significance of Machu Picchu, and historians continue to disagree about its exact place in Inca politics and society.
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where is light penetration in a river or stream likely to be lowest? a. the source b. the mouth c. the middle portion d. none of the above please select the best answer from the choices provided a b c d
Light penetration in a river or stream is likely to be lowest at the middle portion. The correct option is C.
This is because the middle portion of a river or stream is typically the deepest and has the most sediment, which can block out or reduce the amount of light that penetrates the water.
Additionally, the middle portion is often where the greatest amount of currents and turbulence occur, which can further reduce the amount of light that reaches the bottom of the river or stream.
As light penetration decreases, photosynthesis rates are lowered and the amount of oxygen available to the aquatic life in the river or stream is also reduced. The correct option is C.
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2. What is one of the characteristics of Mexico's heartland region?
the country's longest coastline
the country's best farmland
the country's largest oil deposits
the country's driest weather
(ANSWER QUICK PLEASE)
the country's best farmland
5. based on your rankings, which features show the largest differences based on latitude? write a short summary paragraph for the data.
The results of this analysis show that temperature, humidity, cloudiness, and wind speed vary significantly based on latitude.
The data reveals that the southern hemisphere has significantly higher temperatures than the northern hemisphere, with the maximum temperature reaching nearly 90 degrees Fahrenheit at the equator.
Additionally, humidity and cloudiness tend to increase as latitude decreases. Conversely, wind speed tends to be significantly higher in the northern hemisphere than the southern hemisphere.
Overall, the data suggests that latitude has a significant impact on climate conditions around the globe.
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relative to the fundamental themes of geography, the grand canyon is best described within which of the five themes?
Relative to the fundamental themes of geography, the Grand Canyon is best described within the theme of "physical geography".
The five fundamental themes of geography are Location, Place, Human-Environment Interaction, Movement, and Regions. These themes are used to describe and understand the physical and human aspects of the world around us.
Let's understand how the Grand Canyon is best described within the fundamental themes of geography:
Location: The location of the Grand Canyon is important to its understanding, but it does not fall within this theme.
Place: The Grand Canyon is a unique place, but it does not fall within this theme as well.
Human-Environment Interaction: The Grand Canyon is formed by the Colorado River and various geological processes. Its formation and how humans have interacted with it over time is best described within this theme.
Movement: The Grand Canyon is not particularly relevant to the movement of people, goods, or ideas, so it does not fall within this theme.
Regions: The Grand Canyon is located within the Southwest region of the United States. It is an important part of this region, but does not fall within this theme.
Therefore, we can conclude that the Grand Canyon is best described within the theme of "physical geography". Physical geography is a branch of geography that studies the natural features of the Earth's surface.
The Grand Canyon is a prominent example of physical geography due to its unique geology and the physical processes that have shaped it over millions of years.
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which of the following are geologic settings where travertine can form? choose one or more: a. in glacial lakes b. in caves c. in fast-moving rivers d. near hot springs e. in swamps
Travertine can form in a variety of geologic settings, including in caves, near hot springs, and in fast-moving rivers. Therefore the correct option is option A, B and C.
In caves, travertine forms as a result of carbon dioxide in the air dissolving in water. This results in an increase in the acidity of the water, which in turn dissolves the rock the cave is made of and deposits the resulting sediment in the form of travertine.
Near hot springs, the water is saturated with dissolved minerals such as calcium carbonate, which can also be deposited in the form of travertine.
In fast-moving rivers, the increased turbulence can cause the suspended sediment in the water to become trapped and deposited in the form of travertine.
Travertine can also form in glacial lakes, but not in swamps.
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theorize about what landforms are produced as a result of this tectonic boundary. (give examples by referring to the names of these landforms in south america) is there a particular prominent landscape with huge mountains?
The tectonic boundary between the South American Plate and the Nazca Plate is a convergent boundary. At this boundary, the Nazca Plate is subducted beneath the South American Plate, resulting in the formation of a subduction zone.
As a result, various landforms are produced, including volcanoes, mountains, and oceanic trenches .In South America, one of the most prominent landforms produced by this tectonic boundary is the Andes Mountains.
These mountains stretch along the western edge of South America and are the longest mountain range in the world. They are formed by the collision of the South American Plate and the Nazca Plate.
Additionally, the Nazca Plate is being subducted beneath the South American Plate, resulting in the formation of the Peru-Chile Trench, which is the deepest oceanic trench in the world.
This trench is located off the coast of South America and is over 3,700 miles long. Other landforms produced by this tectonic boundary include volcanoes, such as Cotopaxi in Ecuador and Villarrica in Chile.
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A __________ is a barren area of land where little precipitation occurs, and living conditions are hostile for plant and animal life.
A desert is a barren area of land where little precipitation occurs, and living conditions are hostile for plant and animal life.
A desert is a dry biome that receives very little precipitation, making it difficult for life to thrive there. Deserts are found all over the world, and they can range in temperature from extremely hot to extremely cold, depending on their location. There are four types of deserts based on their location and climate, which are hot and dry, semiarid, coastal, and cold. Some examples of deserts include the Sahara in North Africa, the Arabian Desert in the Middle East, and the Mojave Desert in the southwestern United States.
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Whatdoes the theory of plate tectonics have that Wegener's hypothesis of continental drift did not have?
Answer: The theory of plate tectonics has a mechanism for explaining how the continents move, while Wegener's hypothesis of continental drift did not.
Explanation: In the early 20th century, Alfred Wegener proposed the hypothesis of continental drift, which suggested that the continents were once joined together in a single landmass called Pangaea, and had slowly drifted apart over millions of years. However, Wegener did not have a mechanism to explain how the continents moved.
In the 1960s, the theory of plate tectonics was developed, and it provided a mechanism for understanding how the continents move. The theory of plate tectonics suggests that the Earth's lithosphere (which includes the crust and the uppermost part of the mantle) is divided into a series of plates that move relative to each other. The motions of the plates are driven by convection currents in the mantle.
At the boundaries where the plates meet, different phenomena occur. At divergent boundaries (such as the Mid-Atlantic Ridge), new crust is formed as magma rises to the surface and hardens, pushing the plates apart. At convergent boundaries (such as the Andes Mountains), plates collide and one is forced under the other (in a process called subduction). At transform boundaries (such as the San Andreas Fault), plates slide past each other.
The theory of plate tectonics thus provides a mechanism for explaining how the continents move over time. As new crust is formed at divergent boundaries and old crust is destroyed at subduction zones, the plates move apart and the continents drift. This explains why the continents are moving today and have been moving over geological time scales, and how they have been in different positions in the past.
Overall, while Wegener's hypothesis of continental drift was a significant step in understanding the evolution of the Earth's continents, it was the theory of plate tectonics that provided the more complete and explanatory picture, by proposing a mechanism for how the continents move.
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which type of unconformity is usually easiest to spot, since layers of sedimentary rocks are on top of igneous rocks without layers?
The type of unconformity, which is usually easiest to spot, since layers of sedimentary rocks are on top of igneous rocks without layers is called Disconformity.
What is an unconformity?
An unconformity is a contact between two groups of rock formations. An unconformity is a surface of erosion or non-deposition that separates younger from older rocks. A time gap or hiatus exists at the unconformity between the rock layers, indicating that some time has passed between the formation of the first group of rocks and the second group.
There are three types of unconformities: nonconformity, disconformity, and angular unconformity. An unconformity can be caused by tectonic events, sea-level shifts, or erosion, among other things.
A disconformity is an unconformity in which parallel layers of sedimentary rocks are separated by a break in sediment deposition or a layer of erosional material.
In a disconformity, the bedding planes of the strata above and below the unconformity are parallel, indicating a time gap in the sedimentary record.
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QUESTION 2 DOK 2 1 ALIGNED STANDARD 5 points
Why does Paul Krugman's statement "Apocalypse will
become the new normal" seem likely to be true?
SELECT AN ANSWER
Countries are doing very little to confront climate
change and have instead decided that climate change
is just normal.
Devastating natural disasters, such as out-of-control
wildfires and historic flooding, seem to be happening
somewhere every year.
Climate change is occurring throughout the world and
people have just come to accept that the climate is
changing.
Every country has had to deal with a historic natural
disaster every year since the 21st century began.
The reason why Paul Krugman's statement "Apocalypse will become the new normal" seems likely to be true is that devastating natural disasters, such as wildfires, flooding, and hurricanes, have become more frequent and intense due to climate change. Option 2 is the answer.
Who is Paul Krugman and what is an apocalypse?Paul Krugman is an American economist and columnist. He is a professor of economics at the Graduate Center of the City University of New York, a Distinguished Scholar at the Luxembourg Income Study Center at the University of Luxembourg, and a columnist for The New York Times.
Apocalypse generally refers to a catastrophic event that results in widespread destruction or the end of the world as we know it. In the context of climate change, it can refer to a scenario in which the effects of climate change, such as extreme weather events, sea level rise, and food and water shortages, become so severe that they threaten human civilization and the natural world.
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in china, mining for rare earth metals has led to the pollution of air and streams and left land stripped of vegetation. this is due to .
Answer:
the lack of strict environmental regulations
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