A major competing theory in Ancient Greece for the atomic theory of matter by Leucippus is the essence theory of matter that was devised by Aristotle.
In Aristotle’s essence theory of matter, he speculated that the properties of all matter were given by a fundamental essence.
Well, if you look close enough there is proof look at the way that the continents are shaped and some fossils have been found in 2 places but on completely different continents.