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QUESTION 7

  1. Describe how atmospheric carbon dioxide levels fluctuate daily, seasonally, and geographically. Explain why such fluctuation occurs.

    Your response should be at least 75 words in length.

    QUESTION 8

    1. Describe the movement of an atom of nitrogen from the leaf of a plant, through the process of decomposition, and back into the root of another plant.

      Your response should be at least 200 words in length.