When Nitrogen Undergoes Atmospheric Fixation, It Enters the Sea and Land

question 15

Multiple Choice

When nitrogen undergoes atmospheric fixation, it enters the sea and land in the form of

• A)NO.
• B)NO ₂.
• C)NH ₃.
• D)NO ₃ ⁻ _.
• E)NH ₄ ⁺ _.

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Definitions:

Kinked-Demand Model

A model in economic theory that suggests prices in an oligopoly market tend to become rigid or stable due to competitive reactions.

Marginal Revenue

The additional income generated from selling one more unit of a good or service.

Kinked-Demand Model

An economic model suggesting that prices in an oligopoly are stable because firms will match price decreases but not price increases due to a kink in the demand curve.