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

Fact 2: Speciation is an extension of evolution.

Given the two facts above, answer the question "What occurs in response to a change in the environment?" with the following options: 
- adding heat
 - fossil fuels
 - agriculture
 - Animal survival
 - movement
 - root growth
 - speciation
 - relocation


 

       speciation  