Maya wrote a few steps to describe how carbon circulates between the atmosphere and living organisms. step 4 is missing.

step 1: carbon enters the atmosphere as carbon dioxide from respiration and combustion
step 2: plants use carbon dioxide to make glucose
step 3: plant-eating animals consume the glucose present in plants
step 4:

which of the following best describes step 4?

carbon dioxide in the atmosphere is used by plants for photosynthesis.

carbon dioxide in the atmosphere is converted into glucose by animals.

dead animals decompose and recycle the carbon in the form of oxygen and water.

dead animals are buried and form fossil fuels, which produce carbon dioxide when burned.