1. Energy flows…(and is lost)
Matter cycles…(and is returned to living things by decomposers)
Decomposers: eat dead materials
ex. Bacteria, fungi, worms

2. all energy come from: the SUN!!!
without plants, nothing else could exist

3. Producers Determine the size of the community
More producers = more consumers
The most mass in an ecosystem
The most energy in an ecosystem

4. Food Chain Show how energy passes from one organism to another
Arrow represents energy flow
Arrow =
“gives energy to”

5. Food Web
Food chains connected together

6. Energy always flows from producers to consumers
Life creates a pyramid when converting energy

7. As you move up the pyramid:
Energy Pyramid:
Shows the amount of energy available at each trophic level
As you move up the pyramid:
Organisms lose 90% of their energy to heat
Only 10% of energy is passed on
Ex: an organism on one trophic level needs to eat 10x more than an organism one trophic level below

8. Matter: Wolf Deer Grass Decomposers Shown in food chain/web
All mass (matter) ends up being decomposed and reused by producers in the soil as nutrients
Wolf
Deer
Grass Decomposers