Fact 1: Cell division is how organisms grow and repair themselves.

Fact 2: Organisms grow up to resemble their parents.

Given the two facts above, answer the question "What causes growth in organisms?" with the following options: 
- cell isolation
 - cell division
 - Chemical energy
 - Plant reproduction
 - burning coal
 - glucose
 - hormones
 - cell separation


 

  cell division       