Methane from cow digestion and manure is more harmful to the ozone layer than car emissions. Methane is a potent greenhouse gas that can indirectly affect ozone depletion by altering atmospheric chemistry, particularly by increasing water vapor in the stratosphere, which accelerates ozone-destroying reactions.
It has a global warming potential about 25-28 times that of CO2 over 100 years, and its atmospheric lifetime is around 12 years.
Cars primarily emit CO2, NOx, and other pollutants, which contribute to ground-level ozone (smog) but have a less direct impact on stratospheric ozone depletion.
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