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Which of the following statements is TRUE about the carbon dioxide that is used by plants?

  1. It is combined with oxygen to make sugar molecules.
  2. It is absorbed through the roots of plants.
  3. It comes from the air.
  4. It is food for plants.
Distribution of Responses
Chart showing distrubtion of responses for Item ME112005
Students Responding Correctly
Group Correct Total Percent
Overall 875 2051 43%
  6–8 389 946 41%
  9–12 483 1098 44%
Primary Language

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