Explain why an organism grows in size when its cells can only achieve a certain size.

this is beacuse of humans have genes are based on your parents

Explanation:

An organism keeps growing because it's cells multiply. Cells are only meant to be a certain size yes but they're also meant to duplicate. For example cancer cells, they only grow so big but then they duplicate causing the tumor to grow bigger.

Explanation:

answer; cnidarians;