Unit 5 part A

Which of the following type of tree harvesting is the most detrimental to the environment?

• Strip Cutting

• Selective Cutting

• Clear Cutting

• Partial Harvest

Overgrazing of grasslands can lead to reduced range quality. Two of the major effects of overgrazing are

• erosion and desertification

• eutrophication and increased methane production

• higher fire potential and increased productivity

• higher primary productivity and ammonification

Deforestation has resulted in

• more farmland in some places but more desertification in others

• more farmland in some places and less desertification in others

• less farmland in some places but more desertification in others

• less farmland in some place and less desertification in others

• no noticeable change in the amount of farmland or desertification

Which of the following is a benefit of clearcutting? Select all that apply.

• it is cost effective (cheap)

• it helps maintain forest stream temperatures

• some trees require full sun conditions to thrive

• It prevents erosion.

Answer explanation

Clearcutting can be economically advantageous but leads to soil erosion, increased soil and stream temperatures, and flooding. Forests contain trees that absorb pollutants and store carbon dioxide. The cutting andburning of trees releases carbon dioxide andcontributes to climate change.

This method of forestry management involves the removal of certain trees with disease or trees of a desired height for use in industry.

• clearcutting

• selective cutting

• controlled burning

• reforestation

What are considered "the commons"

• Common house hold items like knifes, spoons, and forks.

• A renewable resource owned by no one and available for use by anyone at little or no charge

• A field where college students can sit outside in between classes

What is a natural part of a forest ecosystem and may be required for seed germination?

• floods

• tornadoes

• fire

• polar vortex

What is the problem with timber plantations?

• low biodiversity

• prone to forest fires

• cause soil erosion

• absorb excess CO2 from atmosphere

Which of the following is an example of a solution to the tragedy of the commons?

• Improving literacy among urban populations

• Raising tax rates for large corporations

• Inventing stronger antibiotics

• Passing a law to set limits for fishermen

This agency manages about 253 million acres of America's public lands as well as 700 million acres of subsurface mineral estate.

• U.S. Department of Agriculture

• Bureau of Land Management

• National Park Service

• US Department of the Interior