On the other hand, certain archaea, the methanogens, produce large quantities of methane by the metabolism of carbon dioxide or other oxidized organic compounds.
ɔnðɪ ˈʌðɚ hˈænd, sˈɜːʔn̩ ɑːɹkˈiə, ðə mˈɛθɐnədʒənz, pɹədˈuːs lˈɑːɹdʒ kwˈɔntᵻɾiz ʌv mˈɛθeɪn baɪ ðə mətˈæbəlˌɪzəm ʌv kˈɑːɹbən daɪˈɑːksaɪd ɔːɹ ˈʌðɚɹ ˈɑːksɪdˌaɪzd ɔːɹɡˈænɪk kˈɑːmpaʊndz.