Please choose the correct answer to the question: Overuse of soil for farming causes local disruptions of several Earth subsystems. Which of these is a part of the biogeochemical cycle that experiences the most severe local disruption?

Answer1: release of carbon into the atmosphere Answer2: release of oxygen into the atmosphere Answer3: cycling phosphorus into the soil Answer4: cycling hydrogen into the soil

Answer format: answer1/answer2/answer3/answer4