Fact 1: Evolution occurs in response to a change in the environment.

Fact 2: Environments reflect native habitats.

Given the two facts above, answer the question "what changes to cause evolution to occur?" with the following options: 
- Quality of life
 - flow of electrons
 - Plants growth
 - Plant reproduction
 - density
 - h2o
 - earth's rotation
 - native habitats


 

        native habitats 