8.L.3 Understand how organisms interact with and respond to the biotic and abiotic components of their environment.

8.L.3.1 Explain how factors such as food, water, shelter, and space affect populations in an ecosystem.

Terms and Concepts

1. Ecosystem

2. Biotic factors

3. Abiotic factors

4. species, population, community, and ecosystem

5. Density dependent factors

6. Density independent factors

7. Limiting factors

8. Reduction of living space

9. Predator-prey and population

10. Carrying capacity

11. population density

8.L.3 Understand how organisms interact with and respond to the biotic and abiotic components of their environment.

8.L.3.2 Summarize the relationships among producers, consumers, and decomposers including the positive and negative consequences of such interactions including: coexistence and cooperation, competition (predator/prey), parasitism, mutualism

Terms

1. Producers and consumers

2. Ecosystem: balanced and unbalanced

3. Predation: predator-prey

4. Competition

5. Symbiotic relationships: Parasitism, mutualism, and commensalism

8.L.3 Understand how organisms interact with and respond to the biotic and abiotic components of their environment.

8.L.3.3 Explain how the flow of energy within food webs is interconnected with the cycling of matter (including water, nitrogen, carbon dioxide, and oxygen).

Terms and Concepts

1. food chains and food web: energy source and energy movement

2. photosynthesis

3. first-level producers

4. first-level consumers

5. second-level consumers

6. third-level consumers

7. decomposers

8. Oxygen cycle

9. Nitrogen cycle

10. Carbon dioxide cycle

Ecological pyramids: How do energy and organisms move up the pyramids?

1. energy pyramid

2. number pyramid

3. biomass pyramid