Fact 1: Mutations are essential for evolution to occur.

Fact 2: Mutations are changes in the DNA information.

Given the two facts above, answer the question "What is essential for evolution to occur?" with the following options: 
- human interference
 - constant DNA information
 - biological diversity
 - the environment
 - converting mass to energy
 - changes in DNA information
 - Plant reproduction
 - unchanged DNA information


 

      changes in DNA information   