If the amount of available food and water decreases in an environment then animals may leave that environment to find food and water, and human beings are animals. Given these facts, what may leave an environment to find food and water if the amount available decreases among the following options:
- bullfrogs
 - Lobsters
 - squids
 - omnivores
 - oceans
 - trees
 - humans
 - clouds


 

       humans  