Approximately How Many Species Have Been Identified on Earth

question 18

Multiple Choice

Approximately how many species have been identified on Earth?

• A)about 500,000
• B)a little less than 1 million
• C)about 1.5 million
• D)a little more than 10 million
• E)about 30 million

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Definitions:

Total Utility

This term refers to the total satisfaction received by consuming a certain amount of goods or services.

Milk Shakes

Although commonly a beverage, if not directly relevant to economics or provided as a specific economic term, the answer is NO.

Marginal Utility

The additional satisfaction or utility that a person receives from consuming one additional unit of a good or service.

Milk Shakes

A cold beverage made from milk, ice cream, and flavorings or sweeteners such as butterscotch, caramel sauce, or chocolate syrup.