Carbon Moves Through the Ecosystem on Both Short- and Long-Term

question 103

Multiple Choice

Carbon moves through the ecosystem on both short- and long-term scales. Which of the following statements BEST describes the movement of carbon through short-term time scales of the food chain?

• A)Partially reduced carbon compounds from primary producers are completely reduced by decomposers.
• B)Primary producers oxidize carbon compounds that were previously reduced by decomposers.
• C)Primary producers fix atmospheric carbon into compounds that will be oxidized by secondary consumers.
• D)Once carbon is fixed by primary producers, it will not enter the atmosphere again until broken down by decomposers.
• E)None of the answer options is correct.

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