Answer :
The answer is D. Carbon can be absorbed by the atmosphere which makes A correct. It is also found in fossil fuels, which makes B also correct and C is also true. Therefore D which says all of the above is the correct answer
Carbon is an essential component of the atmosphere. It is stored in biosphere as carbon dioxide, underground as fossil fuels and calcium carbonate rock, and in the oceans as dissolved carbon dioxide. So the correct option is d, all of the above.
What is biosphere?
The biosphere is area of the Earth where life exists which means complete ecosystems.
The biosphere continues from the deepest root systems of trees, to the environments of ocean trenches or from this to lush rain forests, high mountaintops, and transition zones like this one.
Carbon is stored in the biosphere as carbon dioxide, underground as fossil fuels and calcium carbonate rock, and in the oceans as dissolved carbon dioxide.
Thus, the correct option is d.
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