The Evolution of Earth and Man

adjustment animals appear atmosphere Aurignacian average body brain carbon carbon dioxide cause cells Cenozoic changes character chemical chromosomes civilization climate continental platforms Cro-Magnon cultural deaths earth ectoderm embryo energy environment Eocene Epoch Europe evidence evolution evolutionary existence fact factors Figure fossil genes geologic glacial glands greater groups growth hereditary higher human hypothesis increase individual inheritance instincts intelligence known lands less living lower Magdalenian mammals man's mankind mass material matter ment mental mesoderm Mesozoic migration miles modern Mousterian muscles mutations natural selection Neandertal nebula Neolithic nervous system occur ocean orbits organic origin Paleolithic Paleozoic period physical Piltdown planetesimal plants Pleistocene Pliocene prehistoric present primitive probably produced progress Proterozoic protoplasm race regions reptiles result rise rocks skull social society solar species stage stars structure surface teeth temperature tidal tidal forces tion vertebrates