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: erosion of soil has a negative impact on the environment.

A: environment forest.
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Q: Fact: Adolescence is a time of significant mental, emotional, and social changes.

A: Adolescence.
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Q: Fact: Molecules of DNA are encoded with instructions that tell cells what to do.

A:
DNA.
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