<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.tangu binadamu alivyoishi katika hali ya kale mpaka sasa kumekuwa na mabadiliko mengi na ubongo umebidi kubadilika kulingana na mabadiliko haya.  <response>: since man lived in primitive conditions to now there has been much change and the brain has had to adapt to these changes. 