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.

Fact: omnivores eat plants
Which creature would be safest from predators in its natural underground habitat?

Fact: migration is when animals move to different locations in an annual cycle
Which phenomenon is studied about once annually?

Fact: a desert environment has low rainfall
Which type of vegetation could you find in areas with low rainfall?