It all started with the industrial era
If we buy a cell phone that has plastic, it came from oil. If it has iron, it came from furnaces at very high temperatures burning fuel to force the metal. When driving a gasoline or diesel car, we are emitting GHGs in large quantities. By connecting a thermoelectric plant that burns coal to generate energy or heat for a city, we are emitting GHG. We raise more cattle on our planet than the number of people in the world (we have more cattle than people), this flock of more than billions of animals, emits intestinal gases in such quantity that also impacts the effect stove. It is both ox and cow releasing fumed methane that helps the planet to warm up more and more.