The word "they" in paragraph 4 refers to
The word "they" in paragraph 4 refers to
A. marine organisms
B. man-made pollutants
C. the oceans
D. ocean's depths
Thông tin: Common man-made pollutants reaching the oceans include pesticides, herbicides, chemical fertilizers, detergents, oil, sewage, plastics, and other solids. Many of these pollutants collect at the ocean's depths, where they are consumed by small marine organisms and introduced into the global food chain.