1. Energy Pyramids and Bioaccumulation

2. Ecology
How living things interact with each other

6. Who is consuming who?

7. Producers :(Autotrophs) can synthesize their own food from inorganic compounds and an energy source.

8. Photosynthesis: organisms convert light energy into chemical energy to fuel activities.

9. Primary Consumer: (Herbivore) feed on plants. Cannot make own food.

10. Secondary Consumers: feeds upon primary consumers

11. Secondary Consumers
Primary Consumers
Producers

12. Energy Pyramid: is a graphical model of energy flow in a community.
Trophic level: where a particular organism is in the food chain

14. Biomass Pyramid
Biomass: amount of organic matter

15. Energy

16. Decomposers: break down organic wastes and dead organisms

17. Bioaccumulation: gradual build up over time of a chemical in a living organism.

18. There are 2 main parts of a food web that are usually never shown.
1. The Sun 2.Decomposers

19. 10% Rule
100% 1%
Energy 9%
Energy
10%
90%
Energy

20. 10% Rule
According to the rule, only 10% of energy is transferred to the next level of the food chain, from the remaining energy.
Some is used up metabolically for survival and the rest is lost as heat.

22. An ecosystem is self-sustaining if the following requirements are met:
1. Constant source of energy
2. Autotrophs
3. A cycling of materials between organisms and their environment.