In the 18th century, Molars and tusks are found together but they didn’t work with their most current theory of existential belief. An elephant species mastodon with molars was initially thought of as two animals but eventually came to be accepted as coming from a single animal. Fossils started being discovered everywhere. Animals still believe to be killed off but their point of origin is not debated.
Charles Darwin discovered the origin of species which was evolution. But still a species dying out was thought off as gradual.
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The world is dying and we are responsible. We need to know what is happening and why.
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