The word "which" in paragraph 3 refers to ____. A.the waste products dumped into our environment B. serious environmental pollution C.activities of surplus human population D. activities of an overpopulated society's industry
Đáp án đúng: D Giải chi tiết:Đáp án là D. Ý trong bài: A rise in population necessitates an increase in the operations of modern industry, the waste products of which increase the pollution of air, water, and soil.