This is legit a question on my science quiz

what is sex

Groups of organisms with low biotic potential, such as gray whales, that produce at most one offspring every other year a) are r-selected b) are k-selected c) are not subject to density-dependent limiting factors d) show the initial stages of the extinction process e) have escaped from the processes of natural selection and adaptation

Provide one reason why mitosis occurs.

Four types of motile cells in human body?