Amphibians Are Thought to Have Evolved from

question 10

Multiple Choice

Amphibians are thought to have evolved from

• A)ray-finned fish.
• B)lobe-finned fish.
• C)spiny fish.
• D)skates and rays.
• E)annelids.

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Definitions:

Marginal Revenue Curve

A graphical representation showing how the revenue from selling one additional unit varies.

Horizontal

A line or direction parallel to the ground or to the bottom edge of a page, representing equality or uniformity in a graphical representation.

Market Price

The current price at which an asset or service can be bought or sold.

Average Variable Cost

The variable cost of production divided by the quantity of output, representing the cost of labor and materials per unit of production.