Respuesta :
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. Does that make sense?
Answer:
The reason why an organism keeps growing and growing but its cells won't when it reaches a size is because, the organism has a lot of cells and i mean a lot. and with the wonderful process of mitosis, cells can divide into 2!
Explanation:
Hope this helped!