Which bonds form between polar molecules

Tlymphocytes mature in the? a. thyroid gland. b. bone marrow. c. spleen. d. thymus.

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

If an organ has six haploid chromosomes,how many chromosomes are present. 6 12