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Ecosystems

Ecosystems. Mrs. Bates December 2008. Organization of Living Things. Recall: Cells Tissues Organs Organ Systems Organism. Organization of Living Things (cont.). So what happens with the organisms? Individual Organism Population Communities Ecosystem. Populations.

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Ecosystems

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  1. Ecosystems Mrs. Bates December 2008

  2. Organization of Living Things Recall: Cells Tissues Organs Organ Systems Organism

  3. Organization of Living Things (cont.) • So what happens with the organisms? Individual Organism Population Communities Ecosystem

  4. Populations • A single organism is the basic unit of organization • Organisms belong to a population of other members of its species (i.e. blue jays)

  5. Communities • Communities are different species that live together in an area • The woods behind my house in Michigan • Deer • Turkey • Blue Jays • Owls • Skunk

  6. Ecosystems • Ecosystems are all living & nonliving things that interact in a particular area • Communities combine with nonliving things to make up an ecosystem. • Examples: • The woods behind my house in MI • The Lake Michigan lakeshore at Sleeping Bear Dunes • The prairie outside Salina, KS

  7. Habitats • A habitat is a place where an organism lives • There may be many in a single ecosystem • Habitats are important because different organisms have different requirements for survival • Example: Forest • Mushrooms – damp soil • Deer – forest floor • Termites – fallen trees • Blue Jays – tree tops

  8. Living & Nonliving • An organism responds to living and nonliving factors in its environment • Biotic factors are living things • Grass • Plants • Animals • Fungi • Worms

  9. Living & Nonliving (cont.) • Abiotic factors are nonliving things • Water – all living things need • Sunlight – necessary for photosynthesis • Oxygen (O2) – most living things need • Temperature – animals respond to temperature • Soil – influences the types of plants; some animals use the soil as a home (prairie dogs, worms)

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