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.

[Q]: Fact: weathering usually occurs over a period of many years
[A]: A stone is weathered into sand in about?


[Q]: Fact: as water increases in an environment , the population of aquatic animals will increase
[A]: As a lake increases in size, there are more?


[Q]: Fact: camouflage can be used for hunting for prey
[A]:
if a predator wanted to catch its meal undetected, which method would be effective?