Land Use & Farming Practices

The tragedy of the commons can be prevented by

• externalities

• fisheries in international waters

• the use of harvest permits

• the use of public lands for grazing

Which is NOT an example of an externality?

• the use of national forests by private companies

• the use of the atmosphere for air pollution

• the use of forested watersheds for aquifer purification

• roads maintained with a tax on gasoline

The maximum sustainable yield of a population usually occurs

• at the maximum population size

• at the minimum growth rate

• at half the carrying capacity

• at approximately 90% of the carrying capacity

Which federal agency typically classifies federal lands under its jurisdiction as multiple use?

I. the Bureau of Land Management

II. the United States Forest Service

III. the Fish and Wildlife Service

• I only

• I and II

• I and III

• I, II, and III

Which is NOT an example of the tragedy of the commons?

• overgrazing by sheep on community-owned pastures

• depletion of fish stocks in international waters

• automobile congestion in Yellowstone National Park

• depletion of soil minerals by farmers on private land

Federally owned land in the United States can best be described as

• 28% of all US land, with the majority of it in the west

• 42% of all US land, with the majority of it in the east

• 25% of all US land, with the most of it in Texas

• 20% of all US land, with 10% of it in the west

The four major public land management agencies in the United States operate under the principle of multiple use. Which use is common to lands managed by all four agencies?

• Mining

• Grazing

• Timber harvesting

• Recreation

National Parks are managed for all of the following EXCEPT

• Scientific use

• Educational use

• Extraction of resources (i.e. timber or ore)

• Recreational use

The Green Revolution

• discouraged the mechanization of agriculture

• decreased energy subsidy of most food

• encouraged the use of monocropping

• pertained to leafy green plants only

Which is NOT a benefit of genetically modified organisms?

• decreased pesticide use

• increased resistance to extreme weather

• increased crop yield

• increased genetic diversity