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Ecosystem Cycles


Ecosystem Cycles

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Item Number:
HWK 990-DVD
Price:
$84.50
Format:
DVD
Length:
61 min.
Copyright:
2002
Closed Caption:
Yes
Producer:
Hawkhill Associates
ISBN:
1559791225
UPC:
874350000320
Summary:
Three videos on one DVD. Chemical Cycles in the Biosphere, How chemicals cycle within the biosphere. Emphasized are the oxygen-carbon dioxide cycle, the water cycle, the nitrogen cycle and how toxic chemicals affect the biosphere. Food Chains in the Biosphere, Students will learn how producers, consumers, decomposers and the abiotic elements are connected in ecosystems and how ecosystems make up a biosphere. Ecosystems on Earth. A primer on ecosystem problems and opportunities in the 21st century with stress on new efforts to save endangered species, avert global warming and restore health to all ecosystems on earth. Subtitled.




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Clearvue
Crystal Productions
Discovery School
Disney Educational
Educational Video Network
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Hawkhill Associates
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Intelecom
Kultur International
Language Tree
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National Geographic
Nest Family
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PBS Video
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Standard Deviants
TMW Media Group
Teachers Video Company
WGBH Boston

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