1. Flow of Energy in Ecosystems

2. What is the primary source of energy for all life on Earth?
Producers-Organisms who make their own food.
Producers use most of the energy they make.
Primary source of energy is the sun

3. Energy that is not used can be passed on to consumers
Consumers CANNOT make their own food.
Primary consumer- eats producer
Secondary consumer- eats primary consumer
Tertiary consumer- eats secondary consumer
Detritivores-worms and insects on stream bottoms
Decomposers- bacteria and fungi- release nutrients to environment through digestive enzymes

4. Herbivore- eats plants
Carnivore- eats animals
Omnivore- Eats plants and animals
Predator- hunt and kill other consumers
Prey- animals that are hunted and killed
Scavenger- eat dead consumers
Heterotroph and Autotroph

5. Ecological Pyramids

6. Energy Pyramid Energy available at each trophic level is represented
Only 10% of energy from is passed from one trophic level to the next.
Available energy decreases

7. Biomass Pyramid
Biomass- the total mass of living matter at each trophic level
Available biomass decreases

8. Numbers Pyramid
Population size decreases