R-organisms reproduce at a very high rate. Knowing this, why don't they usually reach their carrying capacity?

(A) They live in environments with many predators that feed on them. (B) They are regularly killed off by disease and/or drought. (C) Their life span is too short. (D) a and b only

Answer: Option D

Explanation:

Carrying capacity can be defined as the maximum number of organisms (maximum load) an environment can carry after providing suitable food, shelter and other necessities.

The R-organism reproduce at a very high rate but they do not reach the carrying capacity. This is because there are many predators that feed on them.

Else, they are also killed by disease or stress conditions. This is the reason they do not reach the carrying capacity.