Over the Past Century, Sagebrush Has Dramatically Expanded Its Range

question 48

Multiple Choice

Over the past century, sagebrush has dramatically expanded its range over the Colorado plateauʹs grasslands. This development has been attributed to the overgrazing of the areaʹs grasses by cattle and sheep. This example indicates that

• A) the relationship between sagebrush and grasses is mutualistic.
• B) sagebrush could not exist anywhere in the absence of cattle and sheep.
• C) grazing has no effect on the distribution of plants.
• D) sagebrush is the dominant competitor over grasses.
• E) the range of sagebrush is normally limited by competition with grasses.

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Definitions:

Numeraire

A unit of account in which prices are expressed in an economic model, facilitating comparison and calculation.

Competitive Equilibrium Price

The price level at which the quantity supplied equals the quantity demanded in a competitive market, ensuring no excess supply or demand.

Utility Function

A mathematical representation of how a set of goods and services are converted into utility or satisfaction for the consumer.

Numeraire

A standard unit of account in economic modeling used to measure relative prices.