In this task, you need to write a topic word from the given fact. The topic word must have at least one word overlap with the given fact. The topic word often involves adding a new word from a related concept. In your topic word, use at least one word from the given fact. Topic words with two or more words work best.

Q: Fact: Most species go through larval stages after hatching.

A: larval stage.
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Q: Fact: Vertebrate chordates have a backbone.

A: Vertebrate chordates bear.
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Q: Fact: Alternation of generations allows for both asexual and sexual reproduction.

A:
alteration of generations.
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