Sessile Benthos in a Hypoxic Zone Generally Begin to Die

question 66

Multiple Choice

Sessile benthos in a hypoxic zone generally begin to die when oxygen in the water drops to ________ ppm.

• A) 15
• B) 10
• C) 5
• D) 2
• E) 0

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Definitions:

Monopolistic Competition

The market structure that exists when there are fewer businesses than in a pure-competition environment and the differences among the goods they sell are small.

Competitive Environment

The dynamic external system in which businesses compete for resources, customers, and market space.

Pure Competition

The market structure that exists when there are many small businesses selling one standardized product.