As it turns out, the vast majority of any plant is actually Carbon! That it got from the AIR!!!! I remember when my friends' brains were blown that all trees ar

As it turns out, the vast majority of any plant is actually Carbon! That it got from the AIR!!!! I remember when my friends' brains were blown that all trees are essentially made out of "air" that got converted to wood. Technically it's the 2xCO_2 -> 2xO_2+2C and the Carbon that sticks around becomes the wood. (also insert Water and energy into that equation. Photosynthesis is crazy). And yes, if it gets burned or decomposed that carbon can get released back into the air (usually as CO2) but if you instead bury it you essentially lock it into solid form. And over years and years that becomes oil!