Nko ntupu anyị na-ahụkarị n'ebe nile, n'ezie, nko ntupu bụ ụdị ngere, dị ka okporo ụzọ, stadium nsu, okporo ụzọ nsu, wdg, nwere nko ntupu.Ya mere, gịnị bụ mmetụta na uru nke ojiji nke nko net?Nko net akụrụngwa bụ isi ala carbon ígwè waya, igwe anaghị agba nchara waya na aluminom ...
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