You are presented with the question "What may cause mammals to leave an enviroment?" and the following answer choices: 
- contamination
 - adequate shelter
 - lack of predators
 - influenza
 - Pollution
 - deforestation
 - natural disasters
 - an abundance of food

Now knowing that natural disasters can cause animals to leave an environment and mammals are a class of animal, choose the best answer.


 

       natural disasters  