release of carbon into the atmosphere release of oxygen into the atmosphere cycling phosphorus into the soil cycling hydrogen into the soil
I am hesitating between 4 options to answer the following question, which option should I choose?
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?
Possibilities:
- release of carbon into the atmosphere
- release of oxygen into the atmosphere
- cycling phosphorus into the soil
- cycling hydrogen into the soil

cycling phosphorus into the soil