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| Keywords: | Environment, Carbon Dioxide, Carbon, Global Warming, Photosynthesis, Tree, Pollution, Carbon Footprint, Oxygen ...more |
| Downloads: |
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| Views: | 4784 |
| Uploaded on: | 05-20-09 © peter howell |
| Also in: | 3 Lightboxes |
| Source codec: | HD: Photo JPEG |
| Length: | 20.83 seconds |
| Anamorphic: | No |
