If the amount of available food and water decreases in an environment then animals may leave that environment to find food and water, and famines occur when there is a general shortage of food. Given these facts, animals may leave an environment during which event among the following options:
- Birth
 - Winter
 - Tropical
 - Rainstorm
 - flooding
 - Hibernation
 - Famine
 - storms


 

       Famine  