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Biology, 15.04.2020 00:03 taygotclout4786

It is thought that modern-day humans (Homo sapiens) evolved from the species Homo heidelbergensis approximately 250,000 to 400,000 years ago; however, we do not know the exact point when H. heidelbergensis became H. sapiens. This example illustrates which reason why the biological species concept sometimes falls short?

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