Andrea A.

Complete Metamorphosis

That's when  the mother lays her eggs. And after days the caterpillar hatches. To survive it has to eat so many plants and leaves. When it's big enough it turns into a larva. Days later it hatches and turns into a ADULT.

Incomplete Metamorphosis

It only has 3 stages instead of 4 . So it only egg, nymph, adult . A grasshopper is an example it go from egg then you hatch then and turn in to a nymph and grow up and turn into a ADULT!