Answer:
single celled
Explanation:
because i asked a teacher
Those would be enzymes I believe. They are the power house of the membrane and lower the amount of activation energy needed.
Homeostasis:
<em>The tendency towards a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes</em>
I think Oxygen is the best answer.
It is d because pesticides run off into water, they are absorbed into soil , and they are left in the air , hope this helps :)