Which of the following statements best describes the relationship between carrying capacity and population size?
A. Population size increases the carrying capacity.
B. Population size is not affected by carrying capacity.
C. Carrying capacity increases population size.
D. Carrying capacity determines the maximum population size.

D. Carrying capacity determines the maximum population size.

Explanation:

Carrying capacity is number of individual an environment can sustain without depleting, exhausting the available resources.

The carrying capacity of a given area is the population an area can sustain with the available resources such as food,shelter,natural resources,water without exhausting the resources for continued use. For animals it is the amount of grass an animal can graze on without compete depletion. When a population is beyond the carrying capacity there is competition and depletion of available resources. Emigration can occur when the population rises beyond the carrying capacity. Increase birthrate and reduction in death rate increases population in a given environment.

i think it is true in my reasonment ..

a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.