HORTICULTURE

Detailed explanation-1: -Biogas also helps mitigate methane emissions that would have otherwise escaped from landfills or manure lagoons. Using this methane as a fuel dramatically reduces its climate impact by converting it into CO2, which is up to 34 times less potent as a greenhouse gas.

Detailed explanation-2: -When MSW is first deposited in a landfill, it undergoes an aerobic (with oxygen) decomposition stage when little methane is generated. Then, typically within less than 1 year, anaerobic conditions are established and methane-producing bacteria begin to decompose the waste and generate methane.

Detailed explanation-3: -Methane is a unique gas produced in strict anaerobic conditions by intestinal methanogens that metabolize H2, one of the end products of bacterial fermentation.

Detailed explanation-4: -Methanogens are the only group of microorganisms on earth producing significant amounts of methane.