Ngokuthuthuka okusheshayo kwesayensi nobuchwepheshe, kusobala ukuthi ukusebenzisa izisebenzi ukwenza inqwaba nemikhiqizo emikhulu ayikwazi ukuhlangabezana nezidingo zamabhizinisi.Ngakho, irobhothi lokuqala lazalwa ngawo-1960, futhi ngemva kweminyaka yocwaningo nokwenza ngcono, ikakhulukazi izimboni. amarobhothi, abe...
Funda kabanzi