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How Ecosystems Work

How Ecosystems Work. Chapter 5. Ecological Succession. Ecological Succession A gradual process of change and replacement of the types of species in a community. Secondary Succession. Secondary Succession

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How Ecosystems Work

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  1. How Ecosystems Work Chapter 5

  2. Ecological Succession

  3. Ecological Succession • A gradual process of change and replacement of the types of species in a community

  4. Secondary Succession

  5. SecondarySuccession • A common type of succession that occurs on a surface where an ecosystem has previously existed

  6. Carbon Dioxide • An atmospheric gas that increases when fossil fuels are burned off

  7. Algal Bloom

  8. Algal Bloom • Evidence of excessive fertilizer use

  9. Climax Community

  10. Climax Community • A final and stable community

  11. Old-Field Succession

  12. Old-Field Succession • A types of succession that occurs on an abandoned farmland

  13. The Sun

  14. What is the ultimate source of energy for almost all organisms except those living deep in the ocean near a thermal vent? • The Sun

  15. Predator vs Prey

  16. Which of the following might depend on a rabbit for its energy? • Grasshopper • Cayote • Cow • horse

  17. Carnivore

  18. A consumer that eats only producers is called a(n) • Carnivore

  19. Food Chain

  20. What term is used to describe a linear sequence in which energy is transmitted from one organism to the next as each organism eats another organism? • Food Chain

  21. Food Web

  22. What term is used to refer to the many feeding relationships that are possible in an ecosystem? • Food Web

  23. Energy/Food Pyramid

  24. Which organism would occupy the level on an energy pyramid with the most energy? • Bobcat • Bird • Grasshopper • carrot

  25. Fossil Fuels

  26. Where are fossil fuels located? • On the surface of the Earth • Deep Within the Earth • Beneath the ocean floor

  27. Lichens

  28. How do lichens contribute to primary succession? • Lichens begin to break down rock to form soil

  29. Where would you most likely find nitrogen-fixing bacteria? • On the roots of legumes

  30. Legumes

  31. What type of vegetation would you expect to find on an abandoned farm that has been undistributed by humans for 150 years? • Short grasses • Shrubs • Young pine trees • Tall, mature oak trees

  32. Consumers are organisms that • Eat only other animal species • Get solar or other energy indirectly • Are also known as self-feeders • Occupy an ecosystem’s lowest energy level

  33. The energy consumed by organisms • Can be stored in fat and sugar molecules

  34. Nitrogen Cycle

  35. Which of these is a large reservoir of nitrogen that is usable by most organisms? • Soil • Atmosphere • Ocean • space

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