Question

Using 4 complete sentences, explain how large-scale agriculture leads to increased atmospheric CO2.

Answer 1

Large-scale agriculture converts forests and grasslands to cropland and pasture, releasing the carbon stored in vegetation and soils as CO2 when plants are cleared or burned. Intensive tillage and drainage disturb soil organic matter and accelerate its oxidation, emitting long-stored soil carbon as CO2. Heavy use of fossil-fuel-powered machinery, irrigation pumps, and energy-intensive fertilizer production adds further CO2 through combustion and industrial emissions. Replacing diverse natural ecosystems with monocultures also reduces the landscape’s capacity to sequester carbon, so less atmospheric CO2 is removed over time.