Methane leads to both global warming and photochemical smog. Order of contribution of global warming gas Order of contribution of global warming gas
CO2>CH4>CFC>O3>N2O>H2O
- Methane is generated in large amounts from paddy fields. CH4 is 40 times stronger greenhouse gas than CO2. - CO2 can be absorbed by photosynthesis or by formation of acid rain etc., while no such activities are there for methane. - It has more heating effects. Hence, methane is stronger global warming gas than CO2. - Methane is not a part of reducing smog. Hence, statements (A),(B) and (C) are true.
