RESOURCES
7. Ecosystems II: matter and energy
| Video - The Sun, the source of life | |
| 1. The trophic structure | |
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Interactive activity - Trophic levels |
| 2. The flow of matter and energy in an ecosystem | |
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Presentation - Raymond Lindeman: the flow of energy |
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Interactive activity - Matter and energy in the ecosystem |
| 3. Trophic parameters and ecological pyramids | |
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Interactive activity - Trophic parameters |
| 4. Biogeochemical cycles | |
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Presentation - The nitrogen cycle |
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Interactive activity - A biogeochemical cycle |