Term
| list 3 ways people use the land that change the land |
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Definition
| agriculture, development, mining |
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Term
| why is soil one of the Earth's most vaulable resources? |
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Definition
| because every living thing that lives on land depends directly or indirectly on soil |
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Term
| t/f soil is a non renewable resource |
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Definition
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Term
| t/f soil formation takes a long time. |
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Definition
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Term
| true or false fertile soil is plentiful |
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Definition
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Term
| true or false half of the Earth has soils good for farming |
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Definition
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Term
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Definition
| soil can be exhausted polutted lose its fertility *crop rotation keep it fertile r lost all together |
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Term
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Definition
| soil can be lost by erosion |
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Term
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Definition
| the advance of desertlike conditons into areas that previously were fertile. |
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Term
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Definition
| when parts of Oklahoma and surrounding states lost soil in the 1930's |
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Term
| why did the Dust Bowl occur |
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Definition
| they plowed soil to grow crops and the soil became exhausted/exposed?. Then in times of drought, the top soil quickly dried out, turned to dust and blew away. |
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Term
| what is soil conservation |
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Definition
| the management of soil to prevent its destruction is referred to as soil conservation |
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Term
| how does contour plowing help conserve soil? |
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Definition
| helps slow runoff of excess rainfall and prevents it from washing away soil |
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Term
| how does conservation plowing help conserve soil |
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Definition
| it leaves previous crop in the ground to hold soil and moster in place it also reterns nutrens to the soil |
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Term
| how does crop rotation help conserve soil? |
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Definition
| it varies crops in order to use fewer nutrients or to restore nutrients to soil |
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Term
| how does planting windbreaks help conserve soil? |
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Definition
| it blocks the wind and traps eroding soil |
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