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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’s 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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Most popular questions from this chapter

Describe freshwater, ocean, and terrestrial ecosystems.

Which of the following approaches would be the most effective way to reduce greenhouse carbon dioxide?

a. Increase waste deposition into the deep ocean.

b. Plant more environmentally-suitable plants.

c. Increase use of fuel sources that do not produce carbon dioxide as a by-product.

d. Decrease livestock agriculture

A food chain would be a better resource than a food web to answer which question? a. How does energy move from an organism in one trophic level to an organism on the next trophic level? b. How does energy move within a trophic level? c. What preys on grasses? d. How is organic matter recycled in a forest?

The weight of living organisms in an ecosystem at a particular point in time is called: a. energy b. production c. entropy d. biomass

A re-created ecosystem in a laboratory environment is known as a ________. a. mesocosm b. simulation c. microcosm d. reproduction
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