Iyiphi ingxenye yoMhlaba enkulu kunazo zonke?
Impendulo ithi: ikhethini.
Ikhethini liyingxenye enkulu kunazo zonke emhlabeni, futhi ikhethini lakha ingxenye enkulu yevolumu ephelele yomhlaba, okuyindawo yonke ezungeze umhlaba, futhi iqukethe insimbi ne-nickel.
Ngokuphambene, uqweqwe loMhlaba lwakha ingxenye encane yomthamo wengqikithi yoMhlaba, njengoba kwenza umongo wangaphakathi nangaphandle.
Ikhethini lichayeka emazingeni okushisa aphezulu afika ku-6000 degrees Celsius, esiza futhi ukukhiqiza amandla kazibuthe oMhlaba, awuvikela ezinhlayiyeni zelanga eziyingozi.
Ngakho, kungashiwo ukuthi ikhethini liyingxenye ebaluleke kakhulu yomhlaba.
