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: To be a friend of the environment? Answer: buy products that can be reused.

A: recycling has a positive impact on the environment
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Q: Question: Dinosaur carcasses are a form of? Answer: fuel.

A: oil is a source of energy
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Q: Question: Scientists suggest that, due to human activities, earth has lost waterways and about half of its original forest lands, endangering many animals and plants in their natural living spaces. However, human activity seems to benefit some living things, such as? Answer: rats and roaches.

A:
humans changing animal habitats usually causes harm to those animals
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