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Chapter 46: Q. 22 (page 1369)

2. The process whereby oxygen is depleted by the growth of microorganisms due to excess nutrients in aquatic systems is called ________. a. dead zoning b. eutrophication c. retrofication d. depletion

Short Answer

Expert verified

The correct option is b. eutrophication .

Step by step solution

01

Step 1. Given information

. A major effect from fertilizer runoff is saltwater and freshwater eutrophication, a process whereby nutrient runoff causes the excess growth of microorganisms, depleting dissolved oxygen levels and killing ecosystem fauna.

02

Step 2. Explanation

The correct option is b. eutrophication .

Atmospheric nitrogen is associated with several effects on Earth鈥檚 ecosystems including the production of acid rain (as nitric acid, HNO3 ) and greenhouse gas (as nitrous oxide, N2O) potentially causing climate change. A major effect from fertilizer runoff is saltwater and freshwater eutrophication, a process whereby nutrient runoff causes the excess growth of microorganisms, depleting dissolved oxygen levels and killing ecosystem fauna.

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