if I ride my bike to school instead of walking, then I will get there faster what is the dependent variable

Explain why in any given geographical region, women tend to have lighter skins( by 3-4% on average) than men?

Nucleic acid certain protein cell membranes certain carbohydrates

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