Trophic Levels and The Flow of Energy
Follow the transfer and flow of energy as it moves from one organism to another.
The Carbon Cycle
Review the complex biogeochemical relationships that power the carbon cycle.
Terrestrial and Aquatic Biomes
Discover the complex biomes of Earth and the communities of plants and animals that live in them.
1.1 Introduction to Ecosystems
1.2 Terrestrial Biomes
1.3 Aquatic Biomes
1.4 The Carbon Cycle
1.5 The Nitrogen Cycle
1.6 The Phosphorous Cycle
1.7 The Hydrologic Cycle
1.9 Trophic Levels
1.10 Energy Flow and the 10% Rule
1.11 Food Chains and Food Webs
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