What caused humans to become the top species on earth, and why is there such an intellectual gap between humans and all other species?
In: Earth Science
Not a full answer but early branches of intelligent humanoids re-converged to a single species. Such as early humans and Neanderthals. This is a natural phenomenon that occurs when a species has a desire to mate with a diverse genetic profile to create a more resilient offspring. If this process creates a less than desirable offspring natural selection will cause a shrinking population of those with undesirable traits.
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