Eutrophication Is Often Caused by Excess Limiting-Nutrient Runoff from Agricultural

question 47

Multiple Choice

Eutrophication is often caused by excess limiting-nutrient runoff from agricultural fields into aquatic ecosystems. This process results in massive algal blooms that eventually die and decompose, ultimately depleting the dissolved oxygen, killing large numbers of fish and other aquatic organisms. Predict which of the following human actions would best address the problem of eutrophication near agricultural areas?

• A) After each eutrophication event, remove the dead fish and invertebrates to place on agricultural fields instead of fertilizer.
• B) Determine which limiting nutrient is responsible for the algal bloom, and use other fertilizers to apply to crops.
• C) Remove the algae before it dies and decomposes to prevent eutrophication from occurring.
• D) Determine critical nutrient loads required for certain crops, and do not exceed this amount during fertilizer application.

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Definitions:

Forgone Income

Income that is lost when an individual chooses not to engage in a certain activity or job, representing an opportunity cost.

Part-time Job

Employment with fewer hours per week than a full-time position, often offering flexibility but with lesser benefits.

Professional Baseball Game

A regulated and officially sanctioned sport event featuring teams of professional baseball players.

Transportation

The process or business of moving goods and people from one place to another.