Earth's Age Is Estimated at ____ Years

question 3

Multiple Choice

Earth's age is estimated at ____ years.

• A) 4.6 × 10⁶
• B) 3.7 × 10⁶
• C) 4.6 × 10⁹
• D) 3.7 × 10⁹
• E) 4.6 × 10¹²

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Definitions:

Marginal Resource Cost

The additional cost incurred by acquiring one more unit of a resource.

Marginal Revenue Product

Marginal revenue product is the additional revenue generated from the use of one more unit of a variable input, holding other inputs constant.

Productive

The ability to produce a substantial amount of goods or services, or doing so efficiently.

Wage Differentials

Wage differentials are the variations in wage rates due to the differences in occupation, industry, geographic location, or within a company, among other factors.