Which statement best summarizes the water cycle?

Answers

Answer 1
Answer: Is there a list of statements you have to choose from?
If so, please tell us them. If not, you can summarize it by saying something like:

Water starts at a spring, heads to the sea then vaporizes and is pushed back to land where is condenses and rains, flows to the sea, and the cycle starts again.

Answer 2
Answer:

Answer:

The water on earth changes forms as it moves from one reservoir to another.

Explanation:

The other two answer choices are

1: as water moves through an ecosystem, its energy is lost between trophic levels.

2:The water on earth changes forms as it moves from one reservoir to another.

and

3: Water in the atmosphere must be converted to another chemical before animals can use it

The correct answer of course would be answer choice 2. It does change forms as in states of matter from liquid to gas (water vapor) to solid (ice) and back again. This is the best summery of what the water cycle means.

1 is incorrect because it violates the law of conservation of energy. Water has nowhere to go so it stays on the surface of the earth.

And three is wrong because it simply does not describe the water cycle.


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Which are required for natural selection to occur

Answers

Natural selection has been the process that allows organisms to adapt to changes. Heritable variations for some traits are required for natural selection. Thus, option A is correct.

What is natural selection?

Natural selection has been defined as the process of survival and reproduction that are evident in evolution and are characteristic of a population or generation of the species.

For natural selection to occur variations, existence and inheritance are the major requirements that are crucial for the organism to show the adaptation and evolutionary process.

Traits inherited from the previous generation must show some variation so as to make the current generation more beneficial and selectable over the ancestral generation.

Therefore, option A. the heritable variations of some traits are an important factor for natural selection.

Learn more about natural selection, here:

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Your question is incomplete, but most probably your options were,

  • heritable variations of some traits
  • the ability of an organism to improve a trait during its lifetime
  • equal probability of survival for all offspring
  • fewer offspring than the environment can support

Answer:

1. heritable variations for some traits

Explanation:

Assuming the options are:

  1. heritable variations for some traits
  2. the ability of an organism to improve a trait during its lifetime
  3. equal probability of survival for all offspring
  4. fewer offspring than the environment can support

there are four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.

The earth's four main spheres continuously interact to support life and balance Earth's materials. When plants absorb carbon dioxide for photosynthesis, it is an example of _____ and _____ sphere interaction.

Answers

Biosphere and Atmosphere

How do the light-dependent reactions and light-independent reactions work together?

Answers

Answer:

In the light-independent reactions or Calvin cycle, the energized electrons from the light-dependent reactions provide the energy to form carbohydrates from carbon dioxide molecules. ... In addition, several enzymes of the light-independent reactions are activated by light.

An old woman joined a kilomater dash sprint and felt very exhausted afterwards. How did the old woman affect her heart rate?

Answers

She undoubtedly pushed her heart rate well past the figure that's considered the maximum for her age. This was a dangerous thing to do, since there was nobody around to help her by the time she arrived at the finish line.

The pituitary gland is located in the brain and controls __________.A.

skin conditions
B.

the rest of the endocrine glands
C.

the regeneration of nerve cells
D.

involuntary motor skills

Answers

B. The rest of the endocrine glands. 
It helps regulate them.

Yup the answer is B on engenuity

The purpose is to test whether the surface texture of the ground affects the distance an object can roll. (science)

Answers

Answer:

the purpose of testing whether the surface texture of the ground affects the distance an object can roll is to understand how different ground textures impact the movement of objects. By conducting this experiment, we can determine whether objects roll farther or shorter distances depending on the surface they roll on.

Explanation: