Which of the Following Was Probably the Least Important Factor

question 12

Multiple Choice

Which of the following was probably the least important factor in bringing about the Cambrian explosion?

• A) the emergence of predator-prey relationships
• B) an increase in the concentration of atmospheric oxygen
• C) the movement of animals onto land
• D) the origin of Hox genes

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Definitions:

Wage Rate

The standard amount of compensation given to employees for their labor, usually expressed per hour or per unit of work done.

Marginal Wage Cost

The additional cost incurred by hiring one more unit of labor, reflecting the change in total wage expenses.

Monopsonistic Labor Market

A labor market in which a single firm is the sole or dominant buyer of labor, giving it power to set wages below competitive levels.

Marginal Revenue Product

The additional revenue generated for each additional unit of input, such as labor or capital, used in the production process.