Biology, Science

10th -

11thgrade

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Carbon, Nitrogen and Phosphorus Cycles

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31 questions

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  • Multiple Choice
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    30 seconds
    1 pt
    When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.
    Water
    Atmosphere
    Sun
    Air
  • Multiple Choice
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    30 seconds
    1 pt
    How do living organisms return carbon to the atmosphere in the carbon cycle?
    respiration and photosynthesis
     decomposition and respiration
  • Multiple Choice
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    30 seconds
    1 pt
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    In what process is Carbon transformed into chemical energy?
    Photosynthesis
    Respiration
    Primary Production
    Secondary Production
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