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Organic Farming: Conserving Topsoil

Grades: 3-12
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Fueled by economic pressure to maximize crop yields and government incentives to produce only one type of crop, contemporary American farmers have been facing ...

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Accessibility: Auditory, Visual

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© 2006, © 1994 WGBH Educational Foundation. All rights reserved.

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NSTA National Science Education Standards


Interactive NOVA: "Earth"


Adapted from Interactive NOVA: "Earth". Produced by WGBH in cooperation with NASA. Stock footage courtesy of The Prelinger Archives. Still images courtesy of Lynn Betts, USDA Natural Resources Conservation Service and Jeff Vanuga, Natural Resources Conservation Service.

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