TASK DEFINITION: In this task, you are given a question and a corresponding answer. Your task is to generate a fact statement that is useful in answering the given question.
PROBLEM: Question: Pollution is a source of what? Answer: dirtying agents.

SOLUTION: pollution is a source of pollutants

PROBLEM: Question: Jackrabbits' hind legs are? Answer: elongated.

SOLUTION: long ears are used for releasing heat by a jackrabbit

PROBLEM: Question: If a species of plant or animal ceases to exist on earth, either by natural causes or by activities of humans, the loss of the plant or animal? Answer: cannot be undone.

SOLUTION:
if all members of a species cannot produce offspring then that species will likely become extinct