Selenium contamination of western soils is related to
A) the application of chemicals by farmers.
B) reliance of natural precipitation with no irrigation.
C) concentration of a natural element in the soil through irrigation drainage collection.
D) none of the above

Question

Quizplus · Accepted Answer

Selenium contamination in western soils is often related to the drainage collection from irrigated agriculture. Selenium is a naturally occurring element in soils, but concentrations can increase through irrigation water that contains selenium. When this water is collected and reused, it can lead to an accumulation of selenium in the soil, which can then impact local ecosystems. Chemical application and reliance on natural precipitation are not significant factors in selenium contamination.

Selenium Contamination of Western Soils Is Related to