Complex sentence: The first Homo sapiens sapiens descended from Homo rhodesiensis appeared in Africa about 250.000 years ago and evolved in Africa, but some of them migrated outside Africa, to the levent, about 100.000 years ago and met with resident H. sapiens neanderthalensis, with some admixture.
Split into simpler sentences: The first Homo sapiens sapiens, descended from Homo rhodesiensis, appeared in Africa about 250,000 years ago and evolved in Africa. Some of them migrated outside Africa, to the levent, about 100,000 years ago and met with resident H. sapiens neanderthalensis, with some admixture.