Question

Sediments enter water as pollutants from all except _____. (a) mining runoff (b) industry (C) urban runoff (D) agriculture

Answer 1

Sediments enter water as pollutants from all sources except agriculture. Hence the correct answer is option D

Step-by-step explanation:

Sediments enter water as pollutants from all except (D) agriculture. Nonpoint sources of pollution include mining runoff, industry, and urban runoff. Rainfall picks up pollutants such as herbicides, pesticides, and fertilizer from agricultural fields and lawns, as well as oil, antifreeze, animal waste, and road salt from urban areas. These pollutants are carried into surface water bodies and groundwater.

Answer 2

Pollutants are substances with high concentration of toxic materials, that pollute the water or the environment and have undesired effect on the environment. Sediments from mining runoff, industry and urban runoff enter water as pollutants. Sediments from agriculture are not considered as pollutants, because they do not contain toxic materials.