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WARRIOR [948]
3 years ago
7

Which phrase best defines erosion? A. layering bits of rocks and soil B. cementing layers of rock together to form stone C. brea

king up rocks into smaller pieces D. moving bits of rock and soil from one place to another
Biology
2 answers:
julsineya [31]3 years ago
6 0
C is the answer. Particles erode from the main rock to form smaller rocks, and rock particles. It's the only answer that makes sense.
earnstyle [38]3 years ago
3 0

The correct answer is option D that is, moving bits of rock and soil from one place to another.  

Erosion in earth science refers to the activity of surface procedures, like wind or water flow, which removes the rock, soil, or dissolved substance from one location to another location of the Earth's crust. This natural phenomenon is a result of the dynamic activity of erosive agents, like ice, water, snow, plants, wind, animals, and humans.  


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Trees & Shrubs

Explanation:

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The chemical equation shown below represents photosynthesis. What is the role of substance A in photosynthesis?
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The answer is C. The missing product (A) is water an it combines with carbon dioxide and light to produce glucose (B).

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Bradley decides one day to run a marathon without any training. After ten minutes has elapsed and Bradley has run half a mile, h
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During intense physical activity the muscles become deprived of oxygen, in this condition, anaerobic respiration takes place in the muscle cells causes the formation of the lactic acid.

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Why is a longitudinal study better than a cross-sectional study for examining how many years cancer survivors stay in remission?
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<span>A cross-sectional study examines all of the participants at one time. So for a cross-sectional study of cancer survivors, we would gather some sample of former patients and find out how long they have been in remission.

The problem with that cross-sectional design is we would be missing the people whose cancer had returned and caused them to die before our experiment started; we would have introduced a problem called "survivor bias" by only counting people who were STILL in remission and still alive.

A better experiment will use a longitudinal design of enrolling people whose cancer has just gone into remission, and following them to see how long they stay healthy.</span>
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3 years ago
emily wants to know how green, blue and red color light affects plant growth compared to natural light. (Hint: what light affect
MArishka [77]

Red and blue colored lights are most effective for plant growth.

Plant Growth is the dependent variable and light color is the independent variable. The rest are control variables.

A Control variable is the part of the experiment that we keep the same throughout all of the test subjects. An independent variable does not depend on other variables and a dependent variable does.

Allow me to explain. When we perform an experiment, many factors that can change the results, For this reason, it is common practice to keep many of them the same for all test subjects (In this case for all of the plants). This way we know that if changes are measured, they were not caused by these variables. These are what we call control variables.

An independent variable does not depend on other variables to remain the same. For example, the species of plant would be an independent variable, given that a plant cannot change its species because of other factors.

A dependent variable does change according to other variables and is often what we try to measure. For this example given, the dependent variable is how much the plant will grow with each colored light.

Knowing that plants rely on light to produce the energy needed to grow, we can <u>hypothesize</u> that applying different colors of light will have an effect on plant growth. To test this, we can create an experiment where we use:

  • Soil
  • amount of water
  • amount of light
  • species of plant
  • length of experiment

As control variables.

One group of plants will have blue light, another green, and another red. We can identify the color of light as an independent variable.

Since what we seek to measure is plant growth, we identify this as our dependent variable and measure it for each plant after a set amount of time, to compare results.

With this, you can confidently identify the control, dependent, and independent variables and how to use them in your experiment.

To learn more about experiments try: brainly.com/question/17314369?referrer=searchResults

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