Unit 7 Sustainable Agriculture, Soil Conservation & Land Ethic

Soil is considered a living ecosystem by itself. Which statement best explains that?

• Each layer of soil contain different materials.

• Soil contains minerals, partially composed organic material & a variety of living organisms.

• A few millimeters of soil can take a few years to a few thousand years to develop.

• Soil is part of numerous nutrient cycles on our planet.

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NGSS.MS-LS2-3

Which of the following is NOT a component of soil?

• Water

• Air

• Sand/gravel/clay

• Living organisms

• All of these are components of soil.

80% of the world's food is produced in...?

• developed countries

• Europe

• Australia

• developing countries

• the United States

Agriculture's high energy needs currently results in about ____ of global greenhouse gas emissions.

• 100%

• 75%

• 50%

• 25%

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NGSS.HS-ESS2-4

NGSS.HS-ESS3-5

NGSS.HS-LS2-7

Intensive farming practices can result in increased rates of...?

• erosion

• eutrophication

• pesticide resistance

• nitrification

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NGSS.MS-ESS3-4

NGSS.MS-LS2-5

Which of the following is a part of the natural process of erosion?

MARK ALL THAT APPLY.

• Depletes bare farmland soil

• Participates in soil formation & loss

• Redistributes products of weathering

• Recycles ALL nutrients within their cycles

Which of the following is a concern related to overfertilization?

• erosion

• desertification

• eutrophication

• pesticide resistance

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

This layer of soil consists primarily of decomposing leaves & organics.

• O horizon (Organic layer)

• A horizon (Topsoil)

• Eluviated layer

• B horizon (subsoil)

• C horizon (parent materials)

This layer of soil consists primarily of organic matter, organisms, roots & inorganic minerals.

• O horizon (Organic layer)

• A horizon (Topsoil)

• Eluviated layer

• B horizon (subsoil)

• C horizon (parent materials)

This layer of soil consists primarily of clays & humic acids that have leached to lower layers.

• O horizon (Organic layer)

• A horizon (Topsoil)

• Eluviated layer

• B horizon (subsoil)

• C horizon (parent materials)