Which of the Following Is the BEST Description of the Euphotic

question 31

Multiple Choice

Which of the following is the BEST description of the euphotic zone?

• A)It is part of the pelagic environment that overlies the ocean floor from the shoreline to a depth of 200 meters and is home to plankton and nekton.
• B)It is the upper level of the pelagic environment, which extends from the surface to a maximum depth of 150 meters in the clearest open ocean water where sufficient light penetrates to support photosynthesis.
• C)It is part of the pelagic environment that overlies the ocean floor at depths greater than 200 meters representing about 75% of the ocean's water with cold temperatures, high pressure, and for the most part an absence of sunlight.
• D)It is the area of shoreline between low and high tides that is a biologically productive but stressful environment.

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Definitions:

Competitive Market

A market structure characterized by many buyers and sellers, none of whom can influence market price significantly on their own.

Marginal Cost Curve

A graphical representation showing how the cost of producing one more unit varies with the quantity produced.

Total Variable Costs

The sum of all costs that vary with the level of production, such as materials and labor, excluding fixed costs.

Units of Output

The total quantity of goods or services produced by a firm or industry during a specific period.