Why is methane called a greenhouse gas?

Answer 1

Methane (CH4) is the primary component of natural gas and an important energy source. Methane is also a greenhouse gas, meaning that its presence in the atmosphere affects the Earth's temperature and climate system. Due to its relatively short life time in the atmosphere (9-15 years) and its global warming potency - 20 times more effective than carbon dioxide (CO2) in trapping heat in the atmosphere - reducing methane emissions should be an effective means to reduce climate warming on a relatively short timescale.
yes
UV radiation that enters the upper atmosphere has a high enough frequency to pierce through atoms and make it all the way to the Earth's surface, where about 10% of it is transformed into heat energy. Then as the heat energy, as infrared radiation travels back away from the Earth into the upper atmosphere, it will hit one of many things. It will permeate small molecules like oxygen, nitrogen, and argon, but larger molecules like methane can deflect it back down to Earth. So the more methane in the upper atmosphere, the more heat energy trapped close to the surface.

Answer 2

1.Combustible gas, consisting chiefly of methane, produced as a result of decay of vegetation in stagnant water.

2.a hydrocarbon gas largely composed of methane formed when organic material decays in the absence of air

3.Marsh gas is another term for methane, produced by plants decomposing under water. Methane is highly combustible and has caused several coal mine explosions, but in marshy areas it's not as dangerous since it's diluted with air.

Answer 3

Methane is produced by decaying vegetable matter in marshes.