Fact 1: Harming an animal species causes that animal 's population to decrease.

Fact 2: Oil spill sare harmful to animals and the enviroment.

Given the two facts above, answer the question "What can oil spills cause?" with the following options: 
- A source of kitchen accidents.
 - death and devastation
 - stains
 - animal populations to decrease
 - depress neuronal excitability
 - wind and erosion
 - slipping
 - food


 

    animal populations to decrease     