GK
ECOLOGY BIODIVERSITY CONSERVATION ENVIRONMENTAL ISSUES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
60 - 65 times more
|
|
|
40 - 45 times more
|
|
|
20 - 25 times more
|
|
|
5 - 10 times more
|
Detailed explanation-1: -Methane is the second most abundant anthropogenic GHG after carbon dioxide (CO2), accounting for about 20 percent of global emissions. Methane is more than 25 times as potent as carbon dioxide at trapping heat in the atmosphere.
Detailed explanation-2: -Methane has more than 80 times the warming power of carbon dioxide over the first 20 years after it reaches the atmosphere. Even though CO2 has a longer-lasting effect, methane sets the pace for warming in the near term.
Detailed explanation-3: -Methane is also one of the potential GHGs. Its global warming potential is 25 times greater than CO2. Methane is also released from both natural and anthropogenic sources.
Detailed explanation-4: -Although methane emissions are lower than carbon dioxide emissions, it is considered a major greenhouse gas because each methane molecule has 25 times the global warming potential of a carbon dioxide molecule.
Detailed explanation-5: -Nitrous Oxide (N2O) has a GWP 273 times that of CO2 for a 100-year timescale. N2O emitted today remains in the atmosphere for more than 100 years, on average.