Which Group Comprises a Significant Portion of Phytoplankton and Therefore

question 13

Multiple Choice

Which group comprises a significant portion of phytoplankton and therefore is important to marine food webs?

• A) Diatoms
• B) Cyanobacteria
• C) Euglenids
• D) Protozoa
• E) Slime molds

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Definitions:

Marginal Cost Curve

A graphical representation showing how the cost to produce one additional unit of a good changes as production increases.

Average Total Cost (ATC)

The total cost of production (fixed and variable costs) divided by the total quantity of output produced.

Marginal Cost (MC)

Marginal cost is the increase in total cost that arises from producing one additional unit of a product or service.

Marginal Revenue (MR)

The enhanced earnings from distributing an additional unit of a good or service.