Given a statement, generate a question such that the answer is contained in that statement.

[Q]: Algae play significant roles in freshwater and marine environments.
[A]: Which species play significant roles in freshwater and marine environments?


[Q]: students use writing utensils
[A]: What type of utensils do students use?


[Q]: Mammals took advantage of an asteroid event.
[A]:
What event did mammals take advantage of?