Evolution

Umlando wokuvela kokuphila eMhlabeni uhlukaniswe ngama-eons amane: iHadean, i-Archean, i-Praterozoic, nePhanerozoic. I-Phanerozoic ifaka ama-eras amathathu: i-Paleozoic, Mesozoic, ne-Cenozoic. Eminyakeni eyizigidigidi ezine yokuvela kokuvela kwezinto eziphilayo, kuye kwavela izidalwa eziningi ezilula, izitshalo eziyinkimbinkimbi nezilwane.

Ukuvela kohlobo lweHomo kwahlala iminyaka eyizigidi ezimbili. Ngalesi sikhathi izinhlobo eziningi zabantu zavela zanyamalala. Idlozi lezinhlobo zokuqala zohlobo lomuntu lungaba yi-Australopithecus afarensis. Izigaba ezibalulekile zokuziphendukela kwemvelo komuntu yiHomo habilis, Homo ergaster, Homo erectus, Homo heidelbergensis, Neanderthal noHomo sapiens.

Ukuphilayo kwemvelo ukukhula kwezilwane zasendle. Amandla amakhulu okuqhuba kwemvelo atholakala nguCharles Darwin. Ubuye wachaza ukuziphendukela kwemvelo ngokwemvelo ngokukhethwa kwemvelo, ukwahluka njengelifa, nomzabalazo wokuba khona.