In a Simple Food Chain with 10-Percent Efficiency, a Net

question 18

Multiple Choice

In a simple food chain with 10-percent efficiency, a net primary production rate at the first trophic level is 10,000 units. How many units are available to the fourth trophic level?

• A) 1000
• B) 100
• C) 10
• D) 1
• E) 0.1

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Definitions:

Esophageal Stricture

The narrowing of the esophagus, which can cause difficulty in swallowing, often resulting from inflammation or scarring.

Nasogastric Tube

A flexible tube passed through the nose into the stomach, used for feeding or removing stomach contents.

Trade Name

The commercial name given to a drug or product by its manufacturer, used for marketing purposes.

Generic Name

The official medical name for a drug's active ingredient, not protected by trademark.