Yiziphi izakhi eziyinhloko ezitholakala emhlabeni?
Context:Ubuningi bomhlaba cishe bungama-5.97×1024 kg (5,970 Yg). Iqukethe kakhulu insimbi (32.1% ngobuningi), i-oxygen (30.1%), i-silicon (15.1%), i-magnesium (13.9%), isulfure (2.9%), i-nickel (1.8%), i-calcium (1.5%), ne-aluminium (1.4%), kanti i-1.2% esele iqukethe amanani amancane ezinye izakhi. Ngenxa yokuhlukaniswa amandla adonsela phansi, umnyombo ngokuyinhloko wakhiwa yizakhi ezixineneyo: insimbi (88.8%), enamanani amancane e-nickel (5.8%), isulfure (4.5%), kanye nezinto ezingaphansi kuka-1% ze-trace. Izingxenye ezivame kakhulu zamadwala ezakha uqweqwe ziyi-oxide. Ingqimba yayo engaphezu kuka - 99% yakhiwa ama - oxide ahlukahlukene
Umzimba womhlaba ngokuyinhloko wakhiwa yinsimbi, umoya-mpilo, i-silicon, i-magnesium, isulfure, i-nickel, i-calcium ne-aluminium.