instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
The female reproductive system consists of structures that produce eggs, secrete female sex hormones, and ultimately enable birth of a fetus.
answer:
What system consists of structures that produce eggs, secrete female sex hormones, and ultimately enable birth of a fetus?

question:
A theory is another name for a broad explanation that is supported by a great deal of evidence.
answer:
What is another name for a broad explanation that is supported by a great deal of evidence?

question:
Sideways impact or bending are the primary causes of bone fractures.
answer:
What are the primary causes of bone fractures?