In this task, you are given a question and a corresponding answer. Your task is to generate a fact statement that is useful in answering the given question.

Q: Question: What are some of the risks of using fertilizer? Answer: Damaging the planet.

A: fertilizers are a source of pollution
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Q: Question: I can use a stopwatch to track? Answer: how many marshmallows I can eat in 10 minutes.

A: a stopwatch is used to measure time
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Q: Question: What changes an ecosystem? Answer: extracting coal.

A:
mining changes an ecosystem
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