Fact 1: If the amount of available food and water decreases in an environment then animals may leave that environment to find food and water.

Fact 2: Animals have to have food, water, shelter to survive.

Given the two facts above, answer the question "Animals may leave an environment to _." with the following options: 
- revive
 - Energy.
 - ecotourism
 - Movement
 - survive
 - reproduce
 - vacation
 - perish


 

     survive    