2. Nutrition and Energy Flow
Autotrophs – Producers
Plants
Heterotrophs – Consumers
Herbivores
Carnivores
Omnivores
Decomposers

3. Food chains
Food chains show how energy and nutrients flow from autotrophs to heterotrophs then eventually to decomposers.

4. Decomposers – use dead stuff

5. WEBS
Food webs represent how food chains can interconnect and show the possible way for materials to be transferred within an ecosystem.

6. Food Webs

7. Energy Pyramids Notice that you lose 10% at each level.
So how much Energy is lost between the primary producers and the tertiary consumers?

8. Energy from the sun Energy from the sun fuels life in the ecosystem.
Materials of life like carbon, nitrogen, phosphorous and water do not increase they just get recycled throughout the ecosystem.

9. The Water Cycle!!!!

10.
Check out this animation.

11. The Carbon Cycle

12. Carbon dioxide in the atmosphere
Carbon dioxide in the water

13. Nitrogen Cycle

14. Phosphorous Cycle