Which of the following must also be present for the vegetables to grow and thrive? Group of answer choices

A:food

B:butterflies

C:caterpillars

D:heterotrophs

Which of the following are the functions of the skeletal system? blood cell production in soft marrow tissues and mineral reserves largest organ of the body for defense and support vitamin d production and pumping blood through vessels voluntary movement and contractile movement

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

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?