You are presented with the question "Evolution occurs in response to what in life?" and the following answer choices: 
- static events
 - global warming
 - that material's properties
 - changing phenomenon
 - major threat to health
 - changing tides
 - Animal survival
 - isolated events

Now knowing that evolution occurs in response to a change in the environment and different environments Life is a changing phenomenon, choose the best answer.


 

    changing phenomenon     