Which One of the Following Statements About the Carbon,phosphorus,and Nitrogen

question 71

Multiple Choice

Which one of the following statements about the carbon,phosphorus,and nitrogen cycles is true?

• A)The major source of carbon used by plants is the soil.
• B)The major source of nitrogen used by plants is the air.
• C)Phosphorus has no atmospheric component.
• D)Bacteria drive the phosphorus cycle.

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