AP Environmental Scienceeasymcq1 pt
Carbon monoxide is dangerous because it
A.binds hemoglobin more strongly than oxygen
B.burns the lungs on contact
C.causes acid rain
D.depletes the ozone layer
CO occupies hemoglobin's oxygen sites, so blood carries less oxygen — odorless, colorless, and often lethal.
Abinds hemoglobin more strongly than oxygen
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