Shenhai e fakamoʻoni fakaʻauha
Kasa fakanatula, ʻa ia ʻoku colorless, odorless, mo e ʻikai ke kona, ʻOku kau ai ʻa e methane pea ʻoku tuʻu laveangofua ʻaupito ke lolotonga ʻi he fetaulaki mo e afi ʻi he ngaahi feituʻu ʻoku ʻoatu heni.
ʻI he ngaahi tukunga angamaheni, Kapau ʻoku lahi ange ʻa e ngaahi kasa ʻoku velangofua ʻi ha feituʻu ʻoku fakangatangata ʻi he fakangatangata ʻo e maumau ʻi he 10%, ʻOku lau ia ko ha tuʻunga fakatuʻutamaki pea ʻoku totonu ke fakaʻehiʻehi mei ai.