stop when a species forms. speed up with stable conditions. take place over many generations. are independent of the environment.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Fossil records indicate that species changes generally
Possibilities:
- stop when a species forms.
- speed up with stable conditions.
- take place over many generations.
- are independent of the environment.

take place over many generations.