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

Fact 2: Evolution Evolution is the changing pattern of life forms.

Given the two facts above, answer the question "what happens in response to change in environment?" with the following options: 
- Plant growth is reduced
 - the wearing away of rock
 - lifeforms change their pattern
 - antimatter
 - density changes
 - Warm air moving into cold air
 - erosion from rivers
 - gravity changes


 

   lifeforms change their pattern      