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: In the food chain process a green plant has the role of producer
[A]: Plants are called producers because they may produce their own?


[Q]: Fact: if members of a species are born then the population of that species increases
[A]: if members of a species are born then the species what increases?


[Q]: Fact: one day is equal to 24 hours
[A]:
Saturday and Sunday together are?