You are presented with the question "what influences the chances of going extinct?" and the following answer choices: 
- cloud cover
 - Population size
 - Pollution
 - Pesticides
 - rainfall
 - risky population
 - Climate change
 - the environment

Now knowing that population size influences the chances of a species surviving and each species lasts for a time, sometimes surviving to the present and sometimes going extinct, choose the best answer.


 

  Population size       