Question:
How many Persistent Organic Pollutants were initially recognized as causing adverse effects on humans and the ecosystem?
A10
B11
C12
D13
Answer:
C. 12
Explanation:
12 Persistent Organic Pollutants were initially recognized as causing adverse effects on humans and the ecosystem. These were a group of 12 highly persistent and toxic chemicals and they are: aldrin, chlordane, DDT, dieldrin, endrin, heptachlor, hexachlorobenzene, mirex, polychlorinated biphenyls, polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans, and toxaphene.