Biology

9th

grade

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Ecology Review

3
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12 questions

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  • 1. Multiple Choice
    45 seconds
    1 pt

    Which feature below is a biotic component of an ecosystem?

    bacteria

    nutrients

    rocks

    water

  • 2. Multiple Choice
    45 seconds
    1 pt

    What term describes the sphere of the Earth where living organisms exist?

    atmosphere

    lithosphere

    biosphere

    hydrosphere

  • 3. Multiple Choice
    45 seconds
    1 pt

    What natural process requires oxygen and sugars and produces carbon dioxide?

    eutrophication

    photosynthesis

    cellular respiration

    nitrogen fixation

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