Environmental

PCBs (polychlorinated biphenyls) found in Missouri commercial buildings are hazardous because:

AThey are flammable and cause fires
BThey are toxic and carcinogenic, commonly found in older electrical equipment and building materials✓ Correct
CThey block drainage systems
DThey increase radon levels

Explanation

PCBs are toxic, persistent organic pollutants found in older electrical transformers, capacitors, and some building materials. They are regulated under TSCA and must be properly remediated.

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