What is the growth rate of a population whose size is equal to the carrying capacity? a. zero
b. decreasing
c. increasing
d. fluctuating

Which of the following is a consequence of urban heat islands? increased precipitation downwind of the city? increased precipitation upwind of the city? decreased winds within the city? increased winds within the city?

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 is the process of a new plant growing from its seed into a seedling? primary growth fertilization pollination germination