A Stream Begins at an Elevation of 200 Meters and Flows

question 45

Multiple Choice

A stream begins at an elevation of 200 meters and flows a distance of 400 kilometers to the ocean. What is the average gradient?

• A) 2 km/m
• B) 0.5 m/km
• C) 2 m/km
• D) 0.5 km/in

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Definitions:

Labor

The human effort, including physical and mental capabilities, used in the production of goods and services.

Capital

Financial assets or the financial value of assets, such as funds held in deposit accounts and/or the physical factories, machinery, and equipment used to produce goods or services.

Pareto Optimal

A state of allocation of resources in which it is impossible to make any individual or preference criterion better off without making at least one individual or criterion worse off.

Marginal Rates

The additional cost or benefit gained from a small or marginal change in production, consumption, or investment.