2. Cycling of matter How is energy returned to the environment
through the decay of biomass?

3. Cycling of Matter Landfill Video
Biomass (Science 360)
Matter and Energy Science Starter class notes
How to make compost

4. Brainpop
Brainpop – Food Chains
Discovery video
Discovery Video

5. Energy
Scientific Minds Science Starter – Food Chains, Food Webs

6. Energy Transfer Cards (Monday Review)
A dead plant and animal leaves behind nutrients and energy in the organic material that made up its body. Scavengers can feed on the carcass but unused energy and nutrients are still left behind.
Biomass – bones, feathers, fur, insect exoskeletons, wood, leaves, feces
Decomposers release the remaining carbon dioxide and nutrients such as nitrogen and phosphorus
Decomposers: Fungus, bacteria, worms, and insects.

7. Food Chains

8. Food Webs

9. Energy Pyramids
science/energy/energypyramid/

10. 10% Rule – Energy Pyramid
An energy pyramid shows the flow of energy in a community. Each level represents different groups of organisms that could make up a food chain. The bottom level indicates producers, and the other levels are consumers. At each level, about 90% of the energy is used by the organism. Only 10% is available to be passed on to the organism that eats it (the next trophic level)