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BELLRINGER:

BELLRINGER:. Put this in the second box of your bellringer page. List five reasons why organisms would compete with each other. Section 2.1 Summary – pages 35 - 45. SHARING THE WORLD. Ecology is the study of interactions that take place between organisms and their environment.

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BELLRINGER:

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  1. BELLRINGER: Put this in the second box of your bellringer page • List five reasons why organisms would compete with each other.

  2. Section 2.1 Summary – pages 35 - 45 SHARING THE WORLD • Ecology is the study of interactions that take place between organisms and their environment. (Where they live, what they eat, and what eats them)

  3. Section 2.1 Summary – pages 35 - 45 BIOSPHERE • In Biology we study the portion of Earth that supports life- Biosphere • It extends from high in the atmosphere to the bottom of the oceans.

  4. LEVELS OF ORGANIZATION Section 2.1 Summary – pages 35 - 45 • Ecologists have organized the living world into levels— • the organism by itself • population • community • and ecosystem

  5. LEVELS OF ORGANIZATION Section 2.1 Summary – pages 35 - 45 ORGANISM • An individual living thing that is made of cells, uses energy, reproduces, responds, grows, and develops.

  6. LEVELS OF ORGANIZATION Section 2.1 Summary – pages 35 - 45 POPULATION • A population is a group of organisms, all of the same species, which interbreed and live in the same area at the same time.

  7. LEVELS OF ORGANIZATION Section 2.1 Summary – pages 35 - 45 COMMUNITY • A biological community is made up of interacting populations in a certain area at a certain time.

  8. COMMUNITY Section 2.1 Summary – pages 35 - 45 • A change in one population in a community may cause changes in the other populations.

  9. LEVELS OF ORGANIZATION Section 2.1 Summary – pages 35 - 45 ECOSYSTEM • Biological communities that interact with each other in a given area and with the abiotic components of that area.

  10. SYMBIOSIS Section 2.1 Summary – pages 35 - 45 • A relationship between organisms of different species is called symbiosis. • Four kinds of symbiosis are recognized: 1. mutualism, 2. commensalism, 3. parasitism, 4. predator/prey.

  11. SYMBIOSIS Section 2.1 Summary – pages 35 - 45 Mutualism • A symbiotic relationship in which both species benefit is called mutualism.

  12. SYMBIOSIS Section 2.1 Summary – pages 35 - 45 Commensalism • Commensalism is a symbiotic relationship in which one species benefits and the other species is unaffected.

  13. SYMBIOSIS Section 2.1 Summary – pages 35 - 45 Parasitism • A symbiotic relationship one species benefits and the other is harmed is called parasitism.

  14. SYMBIOSIS Section 2.1 Summary – pages 35 - 45 Parasitism • Parasites have evolved in such a way that they harm, but usuallydo not kill the host species. Tape Worms in Intestine

  15. In a predatorand prey relationship one species is benefitted and the other is killed. Predators seek out and eat other organisms. Section 2.1 Summary – pages 35 - 45 • Predation is found in all ecosystems and includes organisms that eat plants and animals.

  16. ORGANISMS IN ECOSYSTEMS Section 2.1 Summary – pages 35 - 45 • A habitat is the place WHERE an organism lives out its life.

  17. ORGANISMS IN ECOSYSTEMS Section 2.1 Summary – pages 35 - 45 A niche is the WAY an organism lives out it’s life— • how it meets its specific needs for food and shelter • how it survives, • and where it reproduces in its environment.

  18. ORGANISMS IN ECOSYSTEMS Section 2.1 Summary – pages 35 - 45 • Why is thought that two species can’t exist for long in the same community if their niches are the same?

  19. Table of Contents: Symbiosis Notes Attach the notes on page 4

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