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: a grassland environment receives more rainfall than a desert
Where would more water fall from the sky yearly?

Fact: an amphibian is cold-blooded
What animal is cold-blooded?

Fact: when a river floods , that river deposits sediment in flood plains

More dirt and sand gets deposited in a flat area near a river whenever?