Earth’s second most common liquid is oil, after water.
Oil is not a “fossil fuel” - it is produced in the mantle and is not going to run out. Please note the moons and planets discovered with hydrocarbon atmospheres, hydrocarbons are common in the universe.
Oil was classified as an “organic substance” by the attendance at a world scientific meeting in1894 by Rockefeller, who wanted to insure that his new Standard Oil company could convince the world that his new resource could be continuously raised in value.
It still works today. Oil companies love environmental protests about “peak oil”, it raises the price.
I never call it “fossil” fuel. I always call it hydrocarbon energy.
There is a massive abundance under our feet, in our oceans, and all over the world.
Nearly every nation could be energy independent, if they wanted it. That is what frightens the communists so much...independence. That is why they are trying to destroy the oil/gas industry forever so all energy comes from gov’t.