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Chapter 3 The Biosphere

Chapter 3 The Biosphere

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Chapter 3 The Biosphere

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  1. Chapter 3 The Biosphere Section 3 – 2 Energy Flow

  2. Energy Flow Energy flows through Ecosystems Energy In: ConsumersConvert to Heat Producers Convert to Carbohydrates

  3. Producers - Photoautotrophs Key Concept: • Sunlight is the main source of energy for most life on earth.

  4. Producers - Chemoautotrophs Key Concept: • Some organisms rely on energy stored in inorganic chemical compounds

  5. Autotrophs An Autotroph Is Any Organism That Can Produce Its Own Food Supply!

  6. Autotrophs = Producer AKA Also Known As PRODUCER captures energy and transforms it into organic, stored energy for the use of living organisms.

  7. Photoautotroph Producer That Captures Energy from the sun by: • Photosynthesis • Adds Oxygen to the atmosphere • Removes Carbon Dioxide from the Atmosphere

  8. Photoautotroph • On Land • Plants • In The Sea • Algae • Tidal Flats & Salt Marshes • Cyanobacteria

  9. Chemoautotroph • Capture energy from the bonds of inorganic molecules • Hydrogen Sulfide • The Process Is Called: Chemosynthesis

  10. Black Smoker

  11. Autotrophs Know the difference between Photosynthesis & Chemosynthesis

  12. Consumers THAT’S YOU

  13. Consumers You are a HETEROTROPH

  14. Consumers Heterotrophs eat other organisms to obtain energy. • Herbivores • Eat Only Plants • Carnivores • Eat Only Other Animals

  15. Consumers Heterotrophs eat other organisms to obtain energy. • Omnivores(That’s You) • Eat Plants & Animals • Detritivores • Feed On Dead Plant & Animal Remains • Decomposers • Fungi & Bacteria

  16. Feeding Relationships Key Concept: Energy flows through an ecosystem in one direction from producers to various levels of consumers

  17. Feeding Relationships • Food Chain • Simple Energy path through an ecosystem • Pg. 69 • Food Web • More realistic path through an ecosystem

  18. Food Chain

  19. Food Web

  20. Trophic Levels Each Level In A Food Chain or Food Web is a Trophic Level. • Producers • Always The First Trophic Level • How Energy Enters The System • Herbivores • Second Trophic Level

  21. Trophic Levels Each Level In A Food Chain or Food Web is a Trophic Level. • Carnivores/Omnivores • Make Up The Remaining Trophic Levels Each level depends on the one below it for energy.

  22. Food Chain

  23. Ecological Pyramids Graphic Representations Of The Relative Amounts of Energy or Matter At Each Trophic Level Energy Pyramid Biomass Pyramid Pyramid of Numbers

  24. Energy Pyramid

  25. Biomass Pyramid

  26. Pyramid of Numbers