Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

[Q]: Circannual behavioral rhythms are linked to the yearly cycle of seasons.
[A]: What type of behavioral rhythms are linked to the yearly cycle of seasons?


[Q]: The endocrine system produces hormones to regulate growth, development, and reproduction.
[A]: Which human organ system produces hormones to regulate growth, development, and reproduction?


[Q]: A current is a stream of moving water that flows through the ocean.
[A]:
What is a stream of moving water that flows through the ocean?