Lack of predators.
An abundance of Food.
Explanation:
this is the best I can do for you sorry let me know if this helps any.
When a stem cell divides, it first becomes an immature red blood cell, white blood cell, or platelet-producing cell. The immature cell then divides, matures further, and ultimately becomes a mature red blood cell, white blood cell, or platelet.
I believe the answer is yes
