evidence: - Short Residence Times: Carbon in the atmosphere, plants, and soils typically has short residence times, ranging from days to years. For example, carbon dioxide in the atmosphere can be taken up by plants during photosynthesis and released back through respiration relatively quickly. [...] - Unlike the relatively short residence times of carbon in living organisms or the atmosphere, fossil fuels serve as long-term carbon reservoirs. [...] 2.3.16 Methane has a residence time of about 10 years in the atmosphere and is eventually oxidized to carbon dioxide - Define the term 'residence time' and explain its significance for methane in the atmosphere - Describe the oxidation process of methane in the atmosphere - Explain why methane is considered a potent greenhouse gas.