Robert Costanza of the University of Vermont Estimates the Monetary

question 85

Multiple Choice

Robert Costanza of the University of Vermont estimates the monetary worth of the earth's ecological services per year at which of the following?

• A) $150 billion
• B) $500 billion
• C) $1.5 trillion
• D) $33.2 trillion
• E) $500 trillion

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Definitions:

Utilization

The ratio of the time that a resource is actually used to the time it is available for use, often measured to assess efficiency in operations.

μ

A symbol often used to represent the mean or average value of a set of numbers in statistics.

Average Waiting Time

The average time that a customer or item spends waiting in a queue before being served.