Nkebi ahịrịokwu 1: Heliair ga-enwe ihe karịrị 21% oxygen, ọ ga-abụkwa hypoxic (ihe na-erughị 17% oxygen) maka ngwakọta na-erughị 20% helium. Nkebi ahịrịokwu 2: Heliair ga-enwe ihe karịrị 21% oxygen ma bụrụ hypoxic na ngwakọta na-erughị 20% helium (erughị 17% oxygen). Ajụjụ: Ọ̀ bụ otu ihe ka ahịrịokwu nke mbụ na nke abụọ pụtara? Ee ma ọ bụ Ee e?
Ee Ee