Since you did not give a list of choices,here are some reasons why l<span>iving cells cannot use heat to provide the activation energy for biochemical reactions:
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>Heat can never be used to do work.
>Heat is not readily available to all living cells.
>Heat doesn't provide the activation energy for their reactions.
<span>Carbon-based macromolecules are found in all life forms.</span>
Answer: an animal that is hunted and killed by another for food.
Explanation:
Since bees and butterflies both pollen are flowers, the growth (population) of flowering plants would become less common without the pollen being spread.