1. Environmental Science
Chapter 1 Section 2

2. Energy throughout Ecosystems
Producers
Consumers – four types
- herbivores
- carnivores
- omnivores
- scavengers
Decomposers

3. Producers
– use sunlight directly to make food through photosynthesis.

4. Herbivores
Eat only plants
to get energy

5. Carnivores
Gets energy from killing and eating other animals

6. Omnivores
Eat both plants and animals to get energy

7. Scavengers
Get their energy from finding and eating dead animals and plants

8. Decomposers
Break down dead organisms as well as their waste products, into elements that can be used

9. Food Chain
Graphic representation of how the energy in food molecules flow from one organism to another
Less accurate than food webs because simple food chains rarely occur in nature
Algae fish bear

10. Food Web Made up of food chains
Much more realistic and complex than simple food chains
Arrows go from prey to predator

11. Food Web
Notice which direction the arrows go in

12. Energy Pyramid Producers are at the bottom
The number of organisms decreases as you go up the pyramid
Only energy stored in the tissues of an organism can be transferred to the next level
Only 10% of the energy moves from one level to the next

15. Use your red pen
Why is a food chain an insufficient representation of energy flow throughout an ecosystem?
Read pg 12-13
On you notes, define habitat and niche
Also, state why it is important to make sure that the natural balance in an ecosystem is maintained?