I am guessing that the molecule type will try to take over the cell OR it will excrete to much waste for the cell to handle and the cell will die.
I am just guessing, but I hope this helps
Humans can will themselves to eat more, as we know that food comes easy to us.
Animals, on the other hand, top priority is survival, so they usually wouldn't think about eating more because it just "tastes good."
The cerebrum controls the higher brain functions such as speech, writing, etc. The cerebellum deals with the involuntary stuff. The other 2 are nowhere near what you are looking for. B - Cerebrum is your answer.
Answer:
2nd one is the most realistic of what occurs in ecosyystems