Use this fact to answer the question: if two animals have the same food source then those two animals compete for food

A cat and a snake are both predators for several of the same animals. If there are only seven mice in a habitat shared by a cat and a snake, there will be

Available choices:
(1). a shared meal between them.
(2). a war between mice and cats.
(3). pressure on them to get the mice before the other does.
(4). enough for each of them to have ten mice.

The answer is:
(3).