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235 Environmental science Quiz on Environmental Science QUIZ chat. 12,13, and 14, created by roxyobx on 13/11/2015.

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Environmental Science QUIZ chat. 12,13, and 14

Question 1 of 31

1

The study of the process by which the lithospheric plates move over the asthenosphere is called:

Select one of the following:

  • Shelterbelt

  • plate boundaries

  • overburden

  • plate tectonics

Explanation

Question 2 of 31

1

Which of the following is not a category of rock types?

Select one of the following:

  • Minerals

  • Igneous

  • Sedimentary

  • Metamorphic

Explanation

Question 3 of 31

1

Metallic or nonmetallic elements or compounds of elements that occur naturally in earth's crust are:

Select one of the following:

  • alloys

  • minerals

  • ferrous

  • poisonous

Explanation

Question 4 of 31

1

The process by which ore is melted at high temperatures to remove impurities is termed

Select one of the following:

  • exclusion mining

  • thermal mining

  • chromatography

  • smelting

Explanation

Question 5 of 31

1

How are mining lands restored?

Select one of the following:

  • land is filled in, graded to its natural contours and vegetation planted

  • toxic pollutants are removed through chemical neutralization processes

  • a few seeds are thrown on the ground

  • mining lands cannot be restored

Explanation

Question 6 of 31

1

The soil profile layer that is mostly organic matter and humus where plant litter accumulates and decays

Select one of the following:

  • A-Horizon

  • B-Horizon

  • C-Horizon

  • O-Horizon

Explanation

Question 7 of 31

1

Sustainable soil use is the

Select one of the following:

  • constant augmentation of soils to maintain their productivity.

  • planting of the same crops in a field over a period of years.

  • use of soil resources without a reduction in the amount or fertility of the soil.

  • changing of the soil profile periodically to maintain its efficiency.

Explanation

Question 8 of 31

1

In order to reduce erosion on steep hillsides, farmers

Select one of the following:

  • plant on terraces

  • plant a shelterbelt

  • use soil from the O-Horizon.

  • do not irrigate.

Explanation

Question 9 of 31

1

Acid mine drainage is pollution caused when

Select one of the following:

  • the acidity of metals in mines exceeds level 9 on the pH scale.

  • a buildup of residual acidity in solid destroys large areas of vegetation.

  • dissolved toxic materials wash from mines into nearby lakes and streams.

  • water, wind or ice erodes the overburden forming erosion drainage channels.

Explanation

Question 10 of 31

1

More than 60% of US land is owned by

Select one of the following:

  • the Federal government

  • state and local governments

  • native american tribes

  • private citizens, corporations and nonprofit organizations

Explanation

Question 11 of 31

1

The most serious problem facing global forests today is:

Select one of the following:

  • deforestation

  • high concentration of CO2 in the atmosphere

  • rapid expansion of forest ecosystems

  • increasing biodiversity

Explanation

Question 12 of 31

1

Most US national forests are managed by the

Select one of the following:

  • US geological survey

  • national parks service

  • fish and wildlife service

  • us forest service

Explanation

Question 13 of 31

1

Rangeland is land that

Select one of the following:

  • forms a plateau

  • is intensively managed

  • has grasses and shrubs as the predominant vegetation

  • is used for growing food crops

Explanation

Question 14 of 31

1

Desertification is when

Select one of the following:

  • resources are extracted from public lands without compensating taxpayers.

  • deserts receive irrigation to form oasis

  • once-fertile rangeland is degraded into nonproductive desert.

  • unrestricted development is allowed in wetlands

Explanation

Question 15 of 31

1

The primary purpose of a conservation easement is to

Select one of the following:

  • set aside protected zones for wildlife sanctuaries.

  • limit the number of livestock allowed to graze on rangelands.

  • receive fair market value for resources mined in privately owned forests.

  • protect privately owned forest from development for a specified number of years.

Explanation

Question 16 of 31

1

Which federal agencies administer public rangelands?

Select one of the following:

  • U.S geological Survey and Fish and Wildlife Service

  • Bureau of Land Management and US Forest Service

  • National Parks Service and Department of the interior

  • Environmental Protection Agency and Wise-use movement.

Explanation

Question 17 of 31

1

The National Parks Service currently administers ___ national parks.

Select one of the following:

  • 28

  • 58

  • 108

  • 388

Explanation

Question 18 of 31

1

A protected area of land in which no human development is permitted is termed

Select one of the following:

  • mountain corridor.

  • wise-use rangeland.

  • permanent pasture.

  • wilderness.

Explanation

Question 19 of 31

1

The goals of the wise-use movement include all of the following except

Select one of the following:

  • timber management of old-growth forests.

  • mining of managed areas.

  • selling parts of resource-rich federal lands.

  • selling the ecosystem services of wetlands.

Explanation

Question 20 of 31

1

Which of the following are considered the three top endangered ecosystems in the U.S.?

Select one of the following:

  • Hawaiian coastline, rainforest, and alpine Aeolian ecosystems.

  • Northern Washington scrubland, cave systems, and grasslands

  • South Florida landscape, Southern Appalachian spruce-fir forests, Longleaf pine forests and savannas

  • California river, stream. and wetland communities.

Explanation

Question 21 of 31

1

Which of the following is NOT a criterion used to evaluate whether an ecosystem is endangered?

Select one of the following:

  • property value of the land

  • prospects for future loss or degradation

  • the area the ecosystem occupies

  • number of endangered species living in the ecosystem.

Explanation

Question 22 of 31

1

Sub-Saharan Africa currently produces less food per person than it did in 1950, which means:

Select one of the following:

  • food insecurity has increased.

  • the population suffers from overnutrition.

  • environmental quality has improved.

  • less food is grown than in 1950.

Explanation

Question 23 of 31

1

A form of intensive subsistence agriculture that involves growing a variety of plants on the same field simultaneously is termed ___.

Select one of the following:

  • nomadic farming

  • shifting cultivation

  • monoculture

  • intercropping

Explanation

Question 24 of 31

1

Farmers and ranchers strive to increase yields by administering ___ to livestock.

Select one of the following:

  • hormones and antibiotics

  • broad-spectrum vitamins

  • sawdust filler in feed

  • artificial sunlight

Explanation

Question 25 of 31

1

What was the main purpose of the green revolution when it began in the middle of the 20th century?

Select one of the following:

  • to promote organic agricultural techniques.

  • to maximize polyculture in every field.

  • to redistribute farmland so every person would have the means to produce his or her own food.

  • to increase crop yields in order to eliminate famine.

Explanation

Question 26 of 31

1

Clearing grasslands and forests to grow crops results in habitat fragmentation that

Select one of the following:

  • increases biological diversity.

  • reduces biological diversity.

  • has no effect on biological diversity.

  • reduces the potential productivity of land.

Explanation

Question 27 of 31

1

___ agriculture uses methods that maintain soil productivity and a healthy ecological balance while minimizing long-term impacts.

Select one of the following:

  • Subsistence

  • Sustainable

  • Industrialized

  • Green revolution

Explanation

Question 28 of 31

1

Broad-spectrum pesticides

Select one of the following:

  • kill beneficial organisms in addition to the targeted pest.

  • are non-mobile and cannot contaminate runoff.

  • are readily broken down into safe materials such as water and CO2.

  • are ineffective.

Explanation

Question 29 of 31

1

Insecticides, herbicides, rodenticides, and fungicides are all examples of

Select one of the following:

  • pesticides, chemicals intended to kill organisms that reduce crop yields.

  • monocultures, techniques that reduce biodiversity in agriculture.

  • pheromones, hormones that decrease fertility of undesirable species.

  • irradiation, ionizing radiation that sterilizes soil.

Explanation

Question 30 of 31

1

One problem associated with pesticide use is bioaccumulation which is the

Select one of the following:

  • development of resistance to particular combinations of pesticides.

  • buildup of a persistent pesticide in an organism’s body.

  • increase in strength of a pesticide over time making it more lethal.

  • mobility of pesticides showing up in places where they were not applied.

Explanation

Question 31 of 31

1

A type of intercropping in which several kinds of plants that mature at different times are planted together is called ___.

Select one of the following:

  • interspersed monoculture

  • nomadic farming

  • shifting cultivation

  • polyculture

Explanation

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