Site na afọ nke ahụmịhe na ngwaọrụ emepụtara , Methan nwere ike inye ọtụtụ ngwa Dational . Seation ngwaọrụ nwere ike izute ọtụtụ ngwa, biko nweta ọrụ oge ntanetị anyị banyere ngwaọrụ eze . Na mgbakwunye na ndepụta ngwaahịa a dị n'okpuru, ị nwekwara ike hazie ngwaọrụ iyuyo nke gị dabere na mkpa gị ka mkpa.