Given a fact, create a question that can be answered using the fact. Construct the question such that it is unambiguous, has a unique answer and the answer can be given using the fact.

Input: Consider Input: Fact: if the amount of available food and water decreases in an environment then animals may leave that environment to find food and water

Output: Which event can lead to the human caused change of an environment?

Input: Consider Input: Fact: the phases of the Moon change the appearance of the Moon

Output: the phases of the moon change the appearance of what?

Input: Consider Input: Fact: sugars are transported from the leaves to the roots of a plant
Output: During photosynthesis, plants produce sugar that may help with their what?