Fact 1: Cell division often causes growth.

Fact 2: Mitosis is cell division.

Given the two facts above, answer the question "What causes growth sometimes?" with the following options: 
- collagen
 - tapeworms
 - Annelids
 - Mitosis
 - bushes
 - hormones
 - pituitary
 - Earthworms


 

    Mitosis     