Multicellular, do not move, have a cell wall, have a nucleus and other organelles, have no chloroplasts, heterotrophs

What are the characteristics of living things

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

Construct at least two possible hypotheses for the student’s experiment.