The numbered boxes in the diagram represent which of the following

What are two reasons for why a species might disappear from the fossil record?

All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time

The first generation of offspring from the cross of two parents is called the a.f1 generation b.f2 generation c.short generation d.p generation