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

Q: Sexually do invertebrates reproduce.

A: How do invertebrates reproduce?
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Q: A frog develops (a/an) lungs as it changes from a tadpole to an adult frog.

A: Which of the following structures does a frog develop as it changes from a tadpole to an adult frog?
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Q: Ligaments is the term for tough protein fibers that connects bones to each other.

A:
What is the term for tough protein fibers that connects bones to each other?
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