You are presented with the question "Changing in animals occurs by a process called what?" and the following answer choices: 
- world climate change
 - It helps them survive
 - natural selection
 - Leptospirosis
 - ozone
 - relocation
 - permineralization
 - animal growth

Now knowing that evolution occurs by a process called natural selection and actually, evolution is adaptation to change, choose the best answer.


 

   natural selection      