1. Matter and Energy in the Environment
Chapter 20

2. Lesson 1: Abiotic Factors
Abiotic means nonliving. The abiotic factors would be the nonliving parts of the environment.

3. Ecosystems
Include all of the abiotic (nonliving) factors and Biotic (Living) factors in an area.
An ecosystem could be a pond, forest, or field.
All organisms need both the abiotic and biotic factors to survive.

4. Lesson 3: Energy in ecosystems
Energy flows through ecosystems from producers to consumers.

5. How does energy move in ecosystems?
Energy moves in a flow pattern.
Matter such as water, moves cyclic pattern

6. Producers are organisms that get energy from sunlight; they make their own food by photosynthesis

7. Consumers obtain their energy by eating (consuming) other organisms
herbivores
carnivores
omnivores
Eat only producers
Eat other animals
Eat producers and animals

8. Modeling energy in ecosystems
Food chain:
shows how energy flows in an ecosystem through feeding relationships.

9. Modeling energy in ecosystems
Food web:
shows how food chains in a community are interconnected.

10. An energy pyramid shows the amount of energy available in each step of a food chain.
Energy is lost at each trophic level