1. Feeding Levels

2. Trophic Levels The feeding levels of an ecosystem.
Ecosystems are made up of several feeding levels
Each trophic level may contain a variety of species.

3. Trophic Levels

4. Questions to consider:
Which of the trophic levels has the most energy?
The least?

5. Energy Pyramid

6. Detailed Energy Pyramid

7. Energy that enters each trophic level:
Mostly used to keep the organism alive
Some is passed out as waste
Some is stored in the organism’s tissues
Available as food for organisms in the next trophic level.

8. Detritivores Feed at every trophic level
Consumers of dead plant/animal matter and animal waste. (Ex. Earthworms, beetles).
Also include decomposers such as bacteria and fungi.