Acertain bird ordinarily lives in or near water and spends much of its time swimming ? what type of feet would you expect this bird to have.

The study of interaction between living organisms and their enviroment is called (a) phytogeography (b) ecology (c) phytosociology (d) ecosystem

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

What are the two main phases of a cell cycle