1. Ecology
Williams

2. Prey
What is prey?
Prey- The organism that is hunted or eaten by the predator.

3. Predator
The Predator is the hunter. The organism that eats the prey.

4. Energy
Troph- energy
Heterotroph- Example?
Autotroph- Example?

5. Energy
Heterotroph- an organism that must obtain energy from other organisms.
Hetero- other
Autotroph-an organism that obtains energy for itself.
Auto- self

6. Alternative names
All Autotrophs are producers. They produce or make their own food. What is the process plants use to make their own food?

7. Alternative names
Photosynthesis, plants and other microorganisms use photosynthesis to create sugars for themselves.

8. Alternative names
All heterotrophs are consumers They consume other things to gain energy.

9. Energy pyramid What do you see? What direction does energy flow?

10. Energy Pyramid
Why does the world have more plant life than animal life?
Think about energy

11. The movement of energy
How much energy is lost from one level to the next?

12. The movement of energy The Ten Percent Rule
How much energy is lost from one level to the next?
Scientists say that on average 90% of the available energy is used for life processes such as respiration, photosynthesis, and reproduction and transformed to heat energy before an organism is consumed.

13. The 10% rule

14. The 10% rule

15. Consumers There are levels of consumers:
Primary consumers (1) consume producers directly.
Secondary consumers (2) directly consume primary consumers.
Tertiary consumers (3)
directly consumes the other
consumers.

16. Energy Pyramids
IMPORTANT!: In energy Pyramids Decomposers are not usually included. Why?

17. Food Chain

18. Food Web