TIL in the Carboniferous Period, no fungus existed to decompose trees. They just grew on top of each other up and up.
The weight of the trees was so great that the ones on the bottom got squished and became coal. That’s where coal is from. Bonus fact: the whole time this was happening, sharks were hunting in the oceans. Sharks are older than trees and fungus!
Oh noooo, the coal existing because of evolutionary lag theory is one of my favourites. Continents colliding and creating wet topical basins is cool too, but it’s not such a good story to tell.