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Ecosystems loading

A natural unit consisting of all the living organisms and nonliving physical factors in an area.

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Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
  • Read
    Ecosystems

    Ecosystems

    by Colin Hubbard //at grade
    Introduction to ecosystems and other ecological concepts.
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    Unit 2: Ecosystems

    Unit 2: Ecosystems

    by MaryAnn Prokow //at grade
    Introduction to ecosystems and other ecological concepts.
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    Ecosystems

    Ecosystems

    by Thasanee Chantarojwong //at grade
    Introduction to ecosystems and other ecological concepts.
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    Ecosystems

    Ecosystems

    by WBASD Science //at grade
    Introduction to ecosystems and other ecological concepts.
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    Ecology_part 1_MrSapora

    Ecology_part 1_MrSapora

    by Slade Sapora //at grade
    Introduction to ecosystems and other ecological concepts.
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    Ecosystems

    Ecosystems

    by Angelica Amposta //at grade
    Introduction to ecosystems and other ecological concepts.
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    Ecosystems

    Ecosystems

    by Shonda Phelps //at grade
    Introduction to ecosystems and other ecological concepts.
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    2.1 Ecosystems

    2.1 Ecosystems

    by Jeff Huska //at grade
    Introduction to ecosystems and other ecological concepts.
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    Ecosystems

    Ecosystems

    by biologyepisd //at grade
    Introduction to ecosystems and other ecological concepts.
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    Ecosystems

    Ecosystems

    by Jennifer Tagliaferro //at grade
    Introduction to ecosystems and other ecological concepts.
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    Ecosystems

    Ecosystems

    by Aaron Pidek-NGH //at grade
    Introduction to ecosystems and other ecological concepts.
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    Ecosystems

    Ecosystems

    by Kathryn Sander //at grade
    Introduction to ecosystems and other ecological concepts.
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    Introduction to Ecosystems

    Introduction to Ecosystems

    by Mark Wicks //at grade
    Introduction to ecosystems and other ecological concepts.
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    Ecosystems

    Ecosystems

    by Jeniphr Grant //at grade
    Introduction to ecosystems and other ecological concepts.
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    Ecosystems

    Ecosystems

    by NMH Biology //at grade
    Introduction to ecosystems and other ecological concepts.
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    Ecosystems

    Ecosystems

    by BeLynda Lee-Jensen //at grade
    Introduction to ecosystems and other ecological concepts.
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    Ecosystems

    Ecosystems

    by Erin Schmidt //at grade
    Introduction to ecosystems and other ecological concepts.
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    Ecosystems

    Ecosystems

    by Andrea Pokrzywinski //at grade
    Introduction to ecosystems and other ecological concepts.
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    Ecosystems

    Ecosystems

    by Cora James //at grade
    Introduction to ecosystems and other ecological concepts.
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    Ecosystems

    Ecosystems

    by Elizabeth Lewis //at grade
    Introduction to ecosystems and other ecological concepts.
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    Ecosystems Review Reading and Explorations

    Ecosystems Review Reading and Explorations

    by Dci Ste //at grade
    This brief reading from CK 12 provides a review of ecosystems concepts from grades 6-8 (abiotic and biotic factors, niche, habitat). Additional resources include an online simulation in which students can explore relationships within ecosystems, and a flash interactive that explains population explosions).
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    The Ecosystem

    The Ecosystem

    by Andrea Pokrzywinski //at grade
    Introduction to ecosystems and other ecological concepts.
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    Ecosystems3

    Ecosystems3

    by Tara Spitzer List //at grade
    Introduction to ecosystems and other ecological concepts.
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    Ecosystem's Characteristics

    Ecosystem's Characteristics

    by Idaho Open Science '16 //at grade
    Introduction to ecosystems and other ecological concepts.
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