Answer/ Explanation:
A. Continental drift refers to the movement of continents spreading apart from one another, where they once were one large landmass. This landmass was called Pangea.
B. The creator of the theory is Alfred Wegener.
C. The evidence for continental drift included the fit of the continents; the distribution of ancient fossils, rocks, and mountain ranges; and the locations of ancient climatic zones.
Question about my natural selection study!
What condition must exist in a population for natural selection to occur?
a. some of its members must be better suited to the environment than others
b. all of its members must be poorly suited to changes in their environment
c. all of its members must be well suited to a variety of environments
d. most members must have very similar traits
The correct response is a. some of its members must be better suited to the environment than others.
What is population?A population is a collection of creatures belonging to the same species that coexist in the same region and have the capacity to reproduce with one another and give birth to living offspring. Populations can be examined at several levels of organization, including the molecular, cellular, individual, and ecological levels. Their sizes can range from a few to millions or billions of individuals.
Natural selection is an evolutionary phenomenon that takes place when certain people in a group have certain qualities that give them a reproductive or survival advantage, enabling them to have more offspring than other individuals. As a result of people with the beneficial qualities having a higher chance of surviving and passing on their genes, the traits may eventually become more prevalent in the population. Because some people must be more fitted to their environment than others, there must be variation in the population for natural selection to take place.
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What is the best way to find out if the food you are eating is healthy for you?
Answer:
1) Read the ingredient list.
2) Look at how long the ingredient list is.
3) Pay attention to types of fats.
4) Look for "100%"
5) Consider convenience.
6) Look at the expiration date.
PLEASE MARK AS BRAINLIESTDescribe how the nervous system and the endocrine system work together in the fight-flight response in detail using homeostasis terminology.
Answer:
The hypothalamus triggers the sympathetic nervous system after receiving a distress signal from the amygdala by communicating with the adrenal glands via the autonomic nervous system. In response, these glands release the hormone epinephrine, also referred to as adrenaline, into the bloodstream.
Answer: The fight-flight response is a physiological reaction that occurs in response to a perceived threat or danger. It is a complex process that involves the nervous system and the endocrine system, working together to maintain homeostasis in the body.
The nervous system detects the threat and initiates the response. When a threat is detected, the sympathetic nervous system is activated. This results in the release of adrenaline and noradrenaline from the adrenal glands, which are part of the endocrine system. These hormones help prepare the body for action by increasing heart rate, increasing blood pressure, and increasing blood glucose levels.
At the same time, the hypothalamus in the brain is also activated. This triggers the release of corticotropin-releasing hormone (CRH), which in turn stimulates the pituitary gland to release adrenocorticotropic hormone (ACTH). ACTH stimulates the adrenal cortex to release cortisol, which helps to maintain blood glucose levels and promote the mobilization of energy stores.
Together, the nervous system and the endocrine system work to coordinate the fight-flight response. The sympathetic nervous system increases heart rate and blood pressure, while the adrenal glands release adrenaline and noradrenaline to help prepare the body for action. At the same time, the hypothalamus and pituitary gland release CRH and ACTH, respectively, which stimulate the release of cortisol to maintain blood glucose levels and promote energy mobilization.
Once the perceived threat has passed, the parasympathetic nervous system is activated to help return the body to its normal state, and the endocrine system stops releasing stress hormones. This coordinated response by the nervous system and the endocrine system helps to maintain homeostasis in the body during times of stress and danger.
Explanation:
Measure volume of bubble column at exactly 20 seconds. Record in Lab Data
Based on the attached picture, at exactly 20 seconds, the volume of the bubble column produced from the action of catalase on hydrogen peroxide is 2.5 mL.
What is the reaction between catalase and hydrogen peroxide?Catalase is an enzyme found in living organisms that catalyzes the breakdown of hydrogen peroxide into water and oxygen gas. The reaction between catalase and hydrogen peroxide can be written as follows:
2 H₂O₂ → 2 H₂O + O₂
When hydrogen peroxide is added to a solution containing catalase, the reaction begins immediately and oxygen gas is rapidly produced, creating bubbles in the solution. The more catalase present in the solution, the faster the rate of the reaction, and the more oxygen gas is produced. The reaction between catalase and hydrogen peroxide is a common laboratory demonstration of enzyme activity and is also important in many biological processes.
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Which property of enzymes is explained by the lock and key hypothesis?
A. Enzymes are inactive at very low temperatures
B. All enzymes are proteins
C. Human enzymes are most active just below 40 degrees Celsius
D. Most enzymes can only catalyse one reaction.
Answer:
D
Explanation:
because the active site can only bind one subrate to form an enzyme-subrate complex
PLEASE HELP FAST
Describe a food chain in detail. Use the teacher notes to help you. Must be 2-4 sentences with a complete description of a food chain and the types of organisms in that food chain. Please check spelling and grammar before submission.
Explained answer:
A food chain describes the flow of energy from one organism to another in an ecosystem. For example, in a grassland ecosystem, a food chain could be as follows: grass is eaten by a rabbit, which is eaten by a fox. In this food chain, the grass is the producer, the rabbit is the primary consumer, and the fox is the secondary consumer. As the fox eats the rabbit, it obtains the energy that the rabbit got from the grass. This energy flow is what sustains the ecosystem.
True or False? Fossils can form only when the remains of an organism decay.
Answer:False
Explanation:
Must be buried.
. Maja puts a hockey puck onto ice. After a while the temperature of the hockey puck decreases. What happens to the molecules of the hockey puck when the temperature of the puck decreases?
a. The hockey puck loses heat molecules.
b. The energy of the molecules in the hockey puck decreases.
c. The energy of the molecules in the hockey puck increases.
d. The cold energy of the molecules in the hockey puck increases.
Answer:
b. The energy of the molecules in the hockey puck decreases.
When the temperature of an object decreases, it means that the average kinetic energy of the molecules in the object decreases. This happens because the molecules lose energy in the form of heat. So, option b is the correct answer.
Explanation:
explain the term glycosidic bond
How fast does a stream have to move to carry the smallest cobbles
Sand, slit, clay, pebbles, and cobbles 10. The size of the sediment particles being transported by a stream, which is moving at a speed of 250 millimeters per second, ranges from cobbles to clay.
What is the required stream velocity at a minimum?The minimum flow velocity required to erode a particle decreases with increasing particle size, with a minimum flow velocity of 30 centimetres per second required to erode a 0.5 millimetre particle being the smallest.
What do stones in a stream mean?The term is frequently used to describe any kind of rounded rock, such as basalt, granite, gneiss, sandstone, etc., that has been moulded into an oblate or prolate spheroid. In mountain streams and as glacial till, cobbles are frequent.
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6. What three steps are involved in clastic rock formation? (6 points)
7. What are three agents of metamorphism? (9 points)
8. Metamorphic rocks are created through a change in the rock's original structure.
( three questions )
1- weathering, transportation, and lithification.
2- temperature, pressure, and fluids.
3- Metamorphic rocks started out as some other type of rock, but have been substantially changed from their original igneous, sedimentary, or earlier metamorphic form.
Hope it answered your questions!
Rising sea levels are a possible global consequence to a change in local environments true or false
Answer:
True
Explanation:
Rising global sea level is a critical consequence of climate change. As ocean waters warm, they expand. Also, as air temperatures warm, water from melting ice sheets, polar ice caps, and glaciers enters into our ocean basins.
what is the most similar planet to earth
Answer: Kepler 452b
Explanation:
Kepler 452b is 1400 light-years from Earth, orbits its star every 385 days, and is 1.6 times the diameter of Earth.
Answer:
Kepler 452b
Kepler 452b is 1400 light-years from Earth, orbits its star every 385 days, and is 1.6 times the diameter of Earth.
This world, whose discovery was announced in 2015, is the first near-Earth-size planet that orbits around a star the size of the sun, according to NASA (opens in new tab). Kepler-452b is 60 percent larger than Earth and its parent star (Kepler-452) is 10 percent larger than the sun.
Use the rule of multiplication and addition to find out the probability of having a
HETEROZYGOUS TALL plant if both parents are carriers for short.
6.25% is the probability .
What does a probability simple definition entail?
A probability is a number that expresses the possibility or likelihood that a specific event will take place. Both proportions between 0 and 1 and percentages between 0% and 100% can be used to describe probabilities.
Probability is a measure of the likelihood that an event will occur or the likelihood that something will happen. Probability is the measure of how likely it is that a coin will land heads up after being tossed into the air.
0.5 • 0.5 • 0.5 • 0.5 = 0.0625 or 6.25%
There’s a 0.5 chance of getting a y allele from parent 1, 0.5 chance of getting an r allele from parent 1, 0.5 chance of getting a y allele from parent 2, and 0.5 chance of getting an r allele from parent 2.
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Select the correct answer.
Which sentence supports the statement that complex, multicellular organisms are made up of specialized cells that each perform different functions for the body?
A.
Human liver cells make proteins that promote homeostasis that neurons do not.
B.
Different species of bacteria have different shapes and structures to their cells.
C.
The DNA in the cell nucleus of chimpanzees and humans are 98% identical.
D.
Prokaryotes do not have nuclei, but they can still carry out the basic functions of life.
Answer: A!
Explanation: The human liver cells work on their own functions unique to their cell type, therefore, answer A is correct
Chris Lowe bought a 32-ounce jar of jam costing $3.69 and a
28-ounce jar of peanut butter costing $3.79. He used a $0.95 coupon that was valid only if he purchased both items.
8. Compare and contrast DNA and RNA.
the diagram shows the life cycle of a pine tree what happens during stage 2 quick due today
A seed that includes an embryo grows into a young pine tree, which is the stage designated as 6. The right answer is D.
A plant zygote is what?The process that takes place after an ovule has been fertilised to create a fully developed plant embryo is known as plant embryogenesis. Following dormancy and germination, this period in the plant's life cycle is crucial.
What is another name for a plant embryo?The portion of a seed or bud that has the plant's roots, stem, and leaves in their early stages is called the plant embryo, also referred to as the seed embryo. An embryo grows and is typically enclosed within a seed or bud after an adult plant that has been fertilised has flowered.
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what type of biotechnology would a dairy farmer use to mate the cows with geneticlaly superior bulls to produce offspring that give high quality milk?
Answer:
Artificial selection because offspring with desirable traits are produced
Explanation:
hope it helps
Lab: Interdependence of Organisms
Assignment: Lab Report
Edge2020 please help
Using Hypothetical scenario, the Lab report on Interdependence of Organisms is given below. The purpose of this lab was to investigate the interdependence of organisms within an ecosystem.
What is the Interdependence of Organisms?Introduction:
In particular, we sought to examine the relationship between plants and herbivores, as well as the impact of predator-prey dynamics on the overall health of the ecosystem. To do this, we conducted a series of experiments that measured plant growth and herbivore populations in the presence and absence of predators.Methods:
We set up three experimental conditions: one with only plants, one with plants and herbivores, and one with plants, herbivores, and predators. Each experimental condition was replicated three times. In each replicate, we measured the growth of the plants and the population of the herbivores and predators over a period of three weeks.Results:
In the control group (plants only), we observed consistent and steady growth of the plants over the three-week period. In the second experimental condition (plants and herbivores), we observed a significant reduction in plant growth due to herbivory. The herbivore population also increased over time, as expected. In the third experimental condition (plants, herbivores, and predators), we observed a decrease in herbivore population due to predation. This, in turn, led to increased plant growth.Discussion:
Our results demonstrate the complex interdependence of organisms within an ecosystem. The presence of herbivores can have a significant impact on plant growth, as they consume plant material and reduce overall biomass. However, the presence of predators can help to control herbivore populations, which can ultimately lead to increased plant growth. These findings highlight the importance of predator-prey dynamics in maintaining a healthy and balanced ecosystem.Conclusion:
In conclusion, our experiments demonstrate the importance of understanding the interdependence of organisms within an ecosystem. Through our investigations of plant-herbivore-predator dynamics, we have shown that the health and stability of an ecosystem depend on the delicate balance of interactions between different species. Further research is needed to fully understand the complexity of these relationships and their implications for conservation and management of ecosystems.Read more about Organisms Interdependence here:
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D. Practice Activity - Direction: Identity what kind of ecosystem is being shown in the pictures below. Whether it is a tropical rainforest, coastal ecosystem, or freshwater ecosystem. Write your answer in the line provided.
1.
2. Tropical rain forest
3.
4.
5.
If we have tall and luxuriant trees then it would follow from such that we are referring to the tropical rainforest.
How do you know that various kinds of ecosystems?The ecosystem has to do with a zone that is composed of the living and the non living parts.
There are various kinds of ecosystems that we have and we know that the particular kind of the ecosystem that is under consideration would depend on the features that we can see.
Unfortunately, the images are not shown so we can't know the kind of ecosystems that we are dealing with. If we had tall luxuriant trees for instance, we can know that we are dealing with a tropical rain forest.
In the grassland ecosystem, there is an abundance of tall grasses which often serve as food for herbivores.
In the marshland ecosystem, there is the abundance of plants that withstand changes in salinity.
Forest ecosystems are characterized by tall trees and a wide range of plant and animal life. They are essential for the production of oxygen and act as a natural carbon sink, reducing greenhouse gases in the atmosphere. Forests are also important for water regulation and soil conservation.
Wetland ecosystems are characterized by standing water or waterlogged soil and are home to a diverse range of plant and animal life, including frogs, alligators, and cattails. Wetlands are important for filtering water, controlling floods, and providing habitat for migratory birds.
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help me please ! !!!!!!!!!!!!!!!!!!!!!!!!!!!
True or False: Each motor skill requires maturation and practice.
Answer:
True
Explanation:
Learning requires a permanent change in a persons capability to excute motor skill as a result of practice
There are 5 Gyres on Earth. However, one of these Gyres are incorrect; meaning the energy levels are inaccurate
determine which one is wrong and explain why.
The North Atlantic, South Atlantic, North Pacific, South Pacific, and Indian gyres are the five largest gyres in the seas.
What is gyre?A gyre is a significant network of circling ocean currents. It is defined by a spiral or circular motion or form, which is restricted by the continents that surround the three ocean basins and is principally caused by the global wind system. The Atlantic, Pacific, and Indian Oceans are home to the three largest ocean gyres, which total five.
There is no evidence that any of these gyres are wrong or have inaccurate energy levels, according to the search results that were provided. Thus, it is impossible to identify which is incorrect and justify why. It is crucial to remember that ocean currents and gyres are intricate systems that are influenced by a variety of variables, including wind patterns, variations in temperature, and salinity gradients . These elements as well as other environmental circumstances can affect the energy levels of these systems. Ocean currents and gyres are studied by scientists using a variety of techniques, including satellite observations and oceanographic surveys.
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Which of these might be considered benefits of climate change? Select the two correct responses.
A. Increased crop growth
B. Loss of biodiversity
C. Increased ocean acidity
D. Widespread drought
E. New business opportunities
Answer:
A. Increased crop growth
E. New business opportunities
Both of these options could potentially be considered benefits of climate change, although it's important to note that they come with significant drawbacks and negative consequences. While increased crop growth could potentially lead to greater food production, it could also disrupt ecosystems and lead to changes in the availability of water resources. Similarly, while new business opportunities could be created as a result of climate change mitigation efforts, these efforts are often costly and may not fully address the underlying issues that are causing climate change in the first place. Overall, it's important to consider the potential costs and benefits of climate change carefully in order to make informed decisions about how to address this global issue.
Explanation:
Question #5
Which complex pattern of genetics describes a blended expression of two alleles?
Linear progression
Codominance
Incomplete dominance
Dominance
Incomplete dominance describes a complex pattern of genetics that results in a blended expression of two alleles.
What is Codominance?
Codominance is a type of genetic inheritance where both alleles of a gene pair are fully expressed in the phenotype of a heterozygous individual. This means that neither allele is dominant or recessive and both traits are expressed simultaneously without blending together.
In this pattern, neither allele is completely dominant, and the heterozygous phenotype is an intermediate blend of the two homozygous phenotypes. For example, in a flower with red and white alleles, a heterozygous individual with one red allele and one white allele may express a phenotype that is pink, a blend of the two colors. This is in contrast to codominance, where both alleles are expressed equally, or dominance, where one allele is completely dominant over the other.
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8 (22) How did Hutton come to view Earth?
10 (24) How was Hutton's theory received by his peers?
11. (25) What was Hutton's controversial view of granite?
-12 (30) What is the significance of the location where the grante
13.35) What is the significance of the rocks at Siccar Point?
14. (39) What was Hutton's big insight about time?
15. (42) Why was Kelvin convinced that Earth had a beginning?
16. (47) What was Kelvin's estimate for the age of Earth?
17. (48) What two things did Kelvin not know that caused his estimate to be off?
18. (55) What crystals do they look for in the granite?
19. What is the actual age of Earth?
Hutton viewed Earth as a dynamic system that constantly changes through natural processes such as erosion and uplift.
What was Hutton's view of the Earth?James Hutton co-created the idea of uniformitarianism with Charles Lyell. He thought that gradual processes over a long period of time created Earth's landscapes, such as the mountains and oceans.
Hutton's theory was initially met with skepticism and criticism from his peers, as it challenged prevailing beliefs that Earth was relatively young and static.
Hutton believed that granite was not created in a single event, but rather formed slowly over time through the cooling and solidification of molten rock deep within Earth's crust.
The location where the granite formed, according to Hutton, was significant because it provided evidence that Earth had a long history of geological activity, as the granite was exposed and eroded over time.
The rocks at Siccar Point, which show layers of rock that have been folded and tilted over millions of years, provided evidence to Hutton that Earth was much older than previously believed.
Hutton's big insight about time was that the processes that shape Earth are slow and gradual, taking place over millions of years, rather than sudden and catastrophic.
Kelvin was convinced that Earth had a beginning because he believed that heat was gradually being lost from Earth, and that if Earth were infinitely old, it would have completely cooled by now.
Kelvin estimated the age of Earth to be between 20 and 400 million years old.
Kelvin did not know about the process of radioactive decay, which can provide a source of heat to Earth's interior, and he did not know about the existence of convection currents in Earth's mantle, which can also generate heat.
Geologists look for zircon crystals in the granite, as they contain small amounts of uranium and lead that can be used to determine the age of the rock.
The actual age of Earth is estimated to be around 4.54 billion years old, based on the age of the oldest known rocks and the decay rates of radioactive isotopes.
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18. How does the following formula for photosynthesis provide evidence of the law of conservation of mass and energy?
CO2 + H20 -= 06H1206 + 02
Answer:
The formula for photosynthesis: CO2 + H2O → C6H12O6 + O2, provides evidence for the law of conservation of mass and energy, which states that mass and energy cannot be created or destroyed, only transformed from one form to another.
In photosynthesis, carbon dioxide and water are transformed into glucose (C6H12O6) and oxygen gas (O2) through the process of absorbing light energy. The number of atoms of each element on the reactant side of the equation must equal the number of atoms of each element on the product side of the equation in order for the equation to be balanced and thus satisfy the law of conservation of mass.
This means that the total mass of the reactants (CO2 + H2O) must equal the total mass of the products (C6H12O6 + O2), and none of the mass can be lost or gained in the process. This satisfies the law of conservation of mass.
Similarly, the energy required for photosynthesis comes from the absorbed light energy, which is transformed into chemical energy stored in the glucose molecule. The energy of the reactants (CO2 and H2O) must be equal to the energy of the products (C6H12O6 and O2), again satisfying the law of energy conservation.
Therefore, the formula for photosynthesis provides evidence for the law of conservation of mass and energy, as it demonstrates that mass and energy are conserved and transformed in a predictable way during the process of photosynthesis.
Explanation:
The chemical formula for the equilibrium reaction of photosynthesis is 6CO2+6H2OC6H12O6+6O2.
How can you demonstrate that CO2 is required for photosynthesis?Iodine solution should be applied to the leaves. The plant's leaves in the jar without the KOH solution change colour from green to blue-black as a result of the starch in the leaves reacting with the iodine. Yet, because the plant cannot manufacture starch in the absence of carbon dioxide, the leaves of the plant in the KOH-filled jar do not change colour.
How do photosynthesis and cellular respiration relate to the equation CO2 h2o C6H12O6 O2?Glucose is produced during photosynthesis from sunlight, six carbon dioxide molecules, and six water molecules (C6H12O6). Glucose (C6H12O6), six water molecules, and six oxygen molecules are used in cellular respiration to produce six carbon dioxide molecules, six water molecules, and six oxygen molecules.
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You hear about a new amazing fertilizer called SuperGro. The company selling it claims that using this fertilizer will double your tomato harvest! Sounds great but as a skeptical consumer you ask for a sample so that you can conduct an experiment in your garden before you buy a big bag of this fertilizer.
Use your knowledge of the scientific method to:
state a good hypothesis for your fertilizer experiment
describe the experiment you would conduct
identify the control and experimental groups/treatments
identify the dependent and independent variables
name two control variables
make up hypothetical results
state a conclusion
7. What are two pieces of evidence used to support the theory that dinosaurs became extinct as a
result of volcanic eruptions about 65 million years ago? (6 points)
Answer:
The discovery of a layer of rock known as the K-T boundary, which separates the Cretaceous period from the Tertiary period. This layer contains high levels of iridium, a rare element that is more abundant in meteorites than in the Earth's crust. This suggests that a large meteorite impact may have occurred around the same time as the volcanic eruptions.
The presence of large-scale volcanic activity in the Deccan Traps region of India, which occurred around the same time as the extinction event. These eruptions are thought to have released massive amounts of volcanic gases into the atmosphere, which would have led to climate change and other environmental changes that could have contributed to the extinction of the dinosaurs.
Explanation: