Chemical Cycles in the Biosphere
Video footage from around the world and updated informative computer graphics show how chemicals cycle within the biosphere. Emphasized are the oxygen-carbon dioxide cycle, the nitrogen cycle, the water cycle, acid rain and how toxic chemicals can affect the biosphere. Updated in 2004.
- Read the script for Chemical Cycles in the Biosphere.
- Download a short clip of Chemical Cycles in the Biosphere. (approx. 5.5 MB download, Quicktime Version 3.0 or higher required)
- Need a second opinion? Read the review of this video.
Secondary, College. Closed captioned. Copyright 2004.
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