All of the Following Obtain Their Oxygen by Diffusion from Surrounding

question 23

Multiple Choice

All of the following obtain their oxygen by diffusion from surrounding water except:

• A)sponges
• B)dolphins
• C)cnidarians
• D)roundworms
• E)frogs

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Definitions:

AVC

The variable cost for each unit of production, known as Average Variable Cost.

AFC

Stands for Average Fixed Cost, which is the fixed costs divided by the quantity of output produced, illustrating how fixed costs spread over units decrease as quantity increases.

MR

An abbreviation for Marginal Revenue, which refers to the additional revenue earned by selling one more unit of a good or service.

MC

Stands for Marginal Cost, which is the increase in total cost that arises from producing one additional unit of a good or service.