1. Energy Roles in Ecosystems
Producers, Consumers, Decomposers

2. Producers

3. Producers
Make their own food for energy
Use energy from the sun
They are a source of energy for other organisms

4. Consumers

5. Consumers

6. Consumers

7. Can NOT make their own food
Consumers
Can NOT make their own food
Get energy from producers or other consumers
Herbivores - only eat plants
Carnivores – only eat meat
Omnivores – eat both plants and meat

8. Decomposers

9. Decomposers
Get their energy by breaking down wastes and dead organisms
Trash collectors of ecosystem
Some are too small to see

10. Food Chains and Food Webs
Moving energy through an ecosystem

12. Food Chain Arrow ALWAYS points in the direction ENERGY is moving
Start with the sun (ENERGY!)
The producer, followed by consumers
Ends with decomposers, then starts over again

13. Food Web

14. Food Webs Connects all the food chains
Arrows are the same as a food chain
Doesn’t include decomposers
“Top” organisms aren’t eaten for food

15. Competition When organisms fight for resources Plants Animals Sunlight
Soil
water
Animals
Space
Water
Light
Food
mates

16. Symbiosis Long-term relationship 1) Both organisms are helped
2) One is helped, nothing happens to the other
3) One is helped, one is harmed

17. Resources Brain pop on food chains
Producers, consumers, decomposers game
Food Chains game