GEOLOGY

Detailed explanation-1: -The largest sources of methane emissions from human activities in the United States are oil and gas systems, livestock enteric fermentation, and landfills.

Detailed explanation-2: -According to the Global Methane Assessment published in 2021, methane emissions from livestock (including cattle) are the largest sources of agricultural emissions worldwide A single cow can make up to 99 kg of methane gas per year.

Detailed explanation-3: -Ruminants are the principal source of livestock methane emissions because they produce the most methane per unit of feed consumed.

Detailed explanation-4: -The world’s five largest methane emitters (from all sources) are China, India, the United States, Russia and Brazil. Together, they are responsible for close to half of all methane emissions globally. Of these, only the United States and Brazil are part of the Global Methane Pledge.