Respuesta :
I personally believe that the right answer is C. Other overpopulation results in more living organisms, and since the pollution has intoxicated the living, they die releasing the carbon into the soil. So there is high amounts of carbon and less of the organic compounds because the overdose on carbon.
Your answer should be C: High quantities of carbon cause organisms to die from lack of organic material. Algae is known for being able to "suffocate" marine life and the plants.
-Hope I helped you today! :)