The answer is d.
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The answer is B cast-off parts of shrubs and trees
They are in response to the environment. Both are homoeostatic mechanisms that lower the core temperature of the body in response to an increase in body temperature. This is an example of 'negative feedback'.
Answer:
a function that represents the distribution of many random variables as a symmetrical bell-shaped graph.
Explanation:
I believe the answer is a mineral's crystal shape is determined by its atomic structure.