A naturally occurring substance that seeps up from the ground and that is potentially toxic to people is ______________.

Name: A naturally occurring substance that seeps up from the ground and that is potentially toxic to people is ______________.
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Question

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Radon gas is a naturally occurring substance that seeps up from the ground and is potentially toxic to people. It is a radioactive gas that can cause lung cancer when inhaled at high concentrations over a long period of time.

A Naturally Occurring Substance That Seeps Up from the Ground