UMary Allen
Izinja zikhapha ixesha elingakanani abantu? Abaphandi kwiYunivesithi yase-Arkansas bazibuze lo mbuzo kwaye bafumanisa ukuba inja yayinokuba yasekhaya ngexesha le-Ice Age.
Uphononongo lwezinyo kwifosili emalunga neminyaka engama-28,500 XNUMX ubudala evela kwiRiphabhliki yaseCzech lubonisa ukuba ngelo xesha kwakukho iiyantlukwano phakathi kwezilwanyana zenja kunye nezilwanyana ezinjengeengcuka. Izidlo ezahlukahlukeneyo zibonisa ukuba ngeli xesha inja yayisele ithotywe ngabantu, oko kukuthi, igcinwe njengezilwanyana zasekhaya. Esi sisigqibo abaphandi abafike kuso kuphononongo lwabo olupapashwe kutshanje.
Ukwenza oku, bavavanya baze bathelekise izicubu zamazinyo ezilwanyana ezinjengeengcuka kunye neenja. Iingcali zenzululwazi ziye zaqaphela iipateni ezicacileyo ezahlula izinja kwiingcuka. Amazinyo ezinja ze-Ice Age anemikrwelo emininzi kuneengcuka zakuqala. Oku kuthetha ukuba batya ukutya okuqinileyo nokubuthathaka ngakumbi. Umzekelo, amathambo okanye enye inkunkuma yokutya kwabantu.
Ubungqina bezinja zasekhaya bubuyela emva kwi-28,000 iminyaka
Kwelinye icala, izinyanya zengcuka zaziyitya inyama. Ngokomzekelo, uphando lwangaphambili lubonisa ukuba izilwanyana ezinjengengcuka zinokuthi zidle inyama ye-mammoth, phakathi kwezinye izinto. “Injongo yethu ephambili yayikukuvavanya ukuba ngaba ezi morphotype zineendlela eziphawulekayo zokuziphatha ezisekelwe kwiipatheni zokunxiba,” kuchaza uPeter Unger, omnye wabaphandi, kwiScience Daily. Le ndlela yokusebenza ithembisa kakhulu ukwahlula kwiingcuka.
Ukugcina izinja njengezilwanyana zasekhaya kuthathwa njengohlobo lokuqala lokufuywa ekhaya. Kwanangaphambi kokuba abantu baqalise ukulima, babefuya izinja. Ngaphandle koku, izazinzulu zisaxoxa ukuba nini kwaye kutheni abantu befuya izinja. Kuqikelelwa ukuba ukususela kwiminyaka engama-15,000 40,000 ukusa kuma-XNUMX XNUMX eyadlulayo, oko kukuthi, ebudeni beXesha Lomkhenkce.