Chapter 22 Prentice Hall Life Science

1. Ecosystems and Biomes
Chapter 22
Week 2

2. Energy Flow
• Producers, Consumers, Decomposers
• Food Chains vs. Food Webs
• Energy Pyramids

3. Producers
• Autotroph
– Plants, Algae, Many Bacteria
• Carbon fixation- CO2organic matter
– Produce complex organic compounds via
photosynthesis (or chemosynthesis)
• Energy Sources
– Sunlight
– Hydrogen Sulfide
– Methane

4. • https://www.youtube.com/watch?v=tzQ-
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• https://www.youtube.com/watch?v=GsrDXZZ
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• https://www.youtube.com/watch?v=uFNWEK
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5. Consumers
• Heterotroph
– Animals, Fungi, Bacteria
• Herbivores
• Carnivores
• Omnivores
• Scavengers

6. Decomposers
• Break down wastes and dead organisms and
return the raw materials to the ecosystem.
• Mushrooms and Bacteria

7. • https://www.youtube.com/watch?v=g2vGlSN
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• https://www.youtube.com/watch?v=c0En-
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• https://www.youtube.com/watch?v=QD8cTdd
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12. Energy Pyramids & 10% Rule

14. Cycles of Matter
• Water Cycle
• Carbon Cycle
• Nitrogen Cycle

18. Nitrogen Cycle

19. Biogeography
• Continental Drift
• Means of Dispersal
• Limits of Dispersal

20. Continental Drift

21. Means of Dispersal
• Wind
• Water
• Other Living Things

22. • https://www.youtube.com/watch?v=BMsmDy
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23. Limits to Dispersal
• Physical Barriers
• Competition
• Climate

24. Biomes and Aquatic Ecosystems
• Rain Forest Biomes
• Desert Biomes
• Grassland Biomes
• Deciduous Biomes
• Boreal Forest Biomes
• Tundra Biomes
• Mountains and Ice
• Freshwater Ecosystems
• Marine Ecosystems

25. • https://www.youtube.com/watch?v=iIQS8kb1
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