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Gary wrote a few steps to describe how carbon circulates between the atmosphere and living organisms. Step 2 is missing.
Step 1: Carbon enters the atmosphere as carbon dioxide from respiration and combustion
Step 2:
Step 3: Plant-eating animals consume the glucose present in plants
Step 4: Animals exhale carbon dioxide
Which of the following best describes step 2?
O Dead animals are buried underground and form fossil fuels.
O Carbon dioxide in the atmosphere is used by plants for photosynthesis.
O Carbon dioxide in the atmosphere is converted into glucose by animals.
O Dead animals decompose and recycle the carbon in the form of carbon dioxide.
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