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.

Question: As watering holes dry up more animals will? Answer: die.
as available water in an environment decreases , the amount of available food in that environment will decrease

Question: During a prolonged shortage of water, a tree's ability to add extra tissue and grow thick rings is slowed and the tree produces? Answer: thinner growth rings.
as the amount of available water decreases , tree-growth rings will become narrower

Question: animals are unable to stay in good health without enough? Answer: sustenance.

an animal requires enough nutrients to maintain good health