Grasslands I, II, III, Final

How much of the earth’s land surface is covered with grasslands?

• 10 to 19 percent

• 20 to 30 percent

• 20 to 40 percent

• 40 to 45 percent

Which of the following is NOT a main threat which plagues grasslands today?

• Urbanization

• Climate change

• Unsustainable agriculture

• Lasting effects from Dust Bowl

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NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which of the following best describes the Farm Bill?

• Special tax farmers must pay each year which goes towards conservation

• Incentives provided to landowners to conserve grassland habitats

• Contract which states farmers and ranchers who own a certain amount of land must provide the government with proof they are utilizing conservation practices

• Enables federal government to fund grazing programs to improve and manage rangelands

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NGSS.HS-ESS3-4

NGSS.HS-LS2-7

Select all the services grasslands provide.

• Build deep and rich soils

• Store carbon dioxide from the atmosphere

• Filter runoff from precipitation

• Provide very important habitat for wildlife

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NGSS.MS-LS2-1

Where are savannas typically found?

• Africa, Australia and South America

• Higher altitudes

• South of the Tropic of Capricorn

• Europe and North America

Tillage is primarily used for which of the following?

• Control weeds and aerate soil

• To harvest the crops

• Move cattle from one pasture to another

• To prepare the grasslands for intentional burning

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NGSS.MS-LS1-5

Grasslands typically exist between which of the following?

• Shrubland and desert

• Forest and desert

• Fire-prone areas and areas of urbanization

• Wetlands and deserts

When topsoil is lost, the loss is fairly permanent because the process to create just three centimeters of topsoil takes about 1,000 years.

• True

• False

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NGSS.MS-ESS2-2

NGSS.MS-ESS3-1

NGSS.MS-LS2-1

Which of the following is the specific mission of the Natural Resources Conservation Service?

• To enforce the Farm Bill

• To improve water resources on grasslands

• To keep grasslands in their condition and not allow trees and invasive species alter the land

• To conserve soils for agricultural production

Why do temperate grasslands have the most fertile soil on earth?

• Trees require substantial amounts of nutrients to grow, so the lack of trees in grassland areas allows for more fertile soil

• Temperate grasslands receive the most rainfall compared to other grasslands

• Grass roots decaying below the surface enriches the soil with nutrients

• Grasslands have the least number of invasive species which absorb nutrients from the soil

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NGSS.MS-LS2-3