what is the fastest flux in carbon cycle

The fastest flux in the carbon cycle is carbon dioxide (CO2) absorption and release from the atmosphere. Carbon dioxide enters the atmosphere through respiration or burning of organic materials like fossil fuels, and is then absorbed by plants and converted into organic compounds through photosynthesis. This organic matter can either be released back into the atmosphere through respiration or decomposition, or sequestered in long-term carbon stores like soils and sediments. Due to its short residence time in the atmosphere and its role as the primary driver of climate change, CO2 is recognized as the fastest flux of the carbon cycle.