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


[Q]: Fact: winter is when a hemisphere is tilted away from the sun
[A]: What happens when a hemisphere is tilted away from the sun?


[Q]: Fact: In the food chain process some types of plankton have the role of producer
[A]:
Plankton can be the food as well as the creator of?