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Category - Building Science

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Which of the following toxins is odorless, invisible, and caused by deposits of natural uranium?

Carbon monoxide
Hydrofluoric acid
Formaldehyde
Radon gas

Explanation

Answer: D - The toxin that is odorless, invisible, and caused by deposits of natural uranium is radon gas. Radon gas exposure can result in lung cancer. According to the EPA, radon ranks as the second leading cause of lung cancer in the country. It is the primary cause of lung cancer in individuals who do not smoke.

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