1. Energy Flow

2. Review Autotroph is an organism that produces its own food
Example – plants
Heterotroph is an organism that CANNOT produce its own food. It needs to ingest other organisms to survive.
Example – humans, bears, rabbits

3. Trophic level
Level of the food chain based on organisms source of energy
Producer, consumer, decomposer

4. Producer Gets energy from the sun through photosynthesis
Plants, algae, some bacteria

5. Consumer
Gets energy from producers or other consumers

6. Decomposer
Detritivore that gets energy form organic waste and dead organisms

7. Food Chain / Energy Pyramid
Energy pyramid – each trophic level is represented by a block, the size of the block represents the biomass
Autotrophs are found on the bottom level (producers)
Heterotrophs are consumers and can be found on any level above the bottom level

8. Biomass
The weight of matter found in the ecosystem

9. Herbivore
An organism that eats only plants

10. Carnivore
An animal that eats other animals

11. Omnivore
An animal that eats both plants and other animals

12. Detritivore
Feeds on dead plants and animals

13. Arrows represent energy flow
Food Chain vs Food Web
Arrows represent energy flow

14. 10% Rule
100% E
10% E
1%E
0.1%E
Both energy and biomass are reduced by 10% as they move up the energy pyramid