D. Mutations involved the genetic variation of the bugs are random
The answer is A because the subject is responding to something that is going on outside of it, if that makes any sense :)
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There has to be one side with a high concentration and another side with a lower concentration
Answer:
The ozone layer helps reduce the amount of UV rays that enter the atmosphere
Explanation:
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<span>A tropism is a movement of an organism toward or away from a stimulus. A positive tropism is when the organism moves toward the stimuli. A negative tropism is when the organism moves away from the stimuli. So, your answer will be negative tropism, since the stem is growing up and out of the soil, AWAY from gravity.</span>
