instruction:
Turn the given fact into a question by a simple rearrangement of words. This typically involves replacing some part of the given fact with a WH word. For example, replacing the subject of the provided fact with the word "what" can form a valid question. Don't be creative! You just need to rearrange the words to turn the fact into a question - easy! Don't just randomly remove a word from the given fact to form a question. Remember that your question must evaluate scientific understanding. Pick a word or a phrase in the given fact to be the correct answer, then make the rest of the question. You can also form a question without any WH words. For example, "A radio converts electricity into?"
question:
Fact: Plants detect light and dark because of their circadian rhythm.
answer:
What do plants detect because of their circadian rhythm?


question:
Fact: A chemical reaction involving rapid oxidation converts chemical energy into light and heat energy.
answer:
A chemical reaction involving what converts chemical energy into light and heat energy?


question:
Fact: ovaries are used in reproduction.
answer:

What is a part of the female reproductive system?