Nwa akwụkwọ ahụ jiri ngwaọrụ na -esote a chọpụta pasent oxygen n’ikuku. Nzọụkwụ nnwale:
① Nke mbụ, jiri nko na -ejikọ eriri roba.
Phosp ìhè phosphorus uhie na ngaji na -ere ọkụ;
Tinye ngaji na -ere ọkụ n’ime ite wee tinye nko n’ime ya;
Mepee mwekota ahụ mgbe ịpusịrị.
Mgbe nnwale ahụ gasịrị, a chọpụtara na oke ikuku oxygen tụrụ erughị 21%.
Ajụjụ: Kedu ihe nwere ike ibute nke a?