Environmental
What is 'carbon monoxide' (CO) and why is it a safety concern in Delaware residential real estate?
AA greenhouse gas from vehicle emissions; only affects outdoor air quality
BA colorless, odorless poisonous gas produced by incomplete combustion of fossil fuels; can accumulate in buildings and cause death✓ Correct
CA harmless byproduct of natural gas combustion
DA gas that indicates the presence of radon
Explanation
Carbon monoxide is a colorless, odorless, tasteless gas produced by incomplete combustion. It binds to hemoglobin more strongly than oxygen, causing CO poisoning. CO detectors are required in residential occupancies in Delaware.
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