Question

why do only animals required a digestive system?

Answer 1

Animals and plants both are multicellular organisms. ... Animals consume complex organic food which they need to digest in digestive system to get nutrients and expel out undigested food. On the other hands plants photosynthesize i.e., they prepare their own food in the form of glucose.

Answer 2

because anamals eat raw food or food the humans cant eat so if they dident have that then they would have to cook there food and eat like heumans but since they don't know how all the anamals in the earth would go extinct