Science, Том 293John Michels (Journalist) American Association for the Advancement of Science, 2001 |
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Стр. 92
... archaea . The carbon - 13 content of archaeal molecular fossils indicates that these archaea were living chemoautotrophi- cally . Their massive expansion may have been a response to the strong strat- ification of the ocean during this ...
... archaea . The carbon - 13 content of archaeal molecular fossils indicates that these archaea were living chemoautotrophi- cally . Their massive expansion may have been a response to the strong strat- ification of the ocean during this ...
Стр. 94
... archaeal spe- cies . However , the specific 13C enrichment of these lipids indicates a common " heavy " ( 13C - rich ) carbon source for the archaea and / or a common pathway of carbon fixation with a reduced 13C fractionation effect ...
... archaeal spe- cies . However , the specific 13C enrichment of these lipids indicates a common " heavy " ( 13C - rich ) carbon source for the archaea and / or a common pathway of carbon fixation with a reduced 13C fractionation effect ...
Стр. 418
... archaea may help keep this greenhouse gas in check Buried in the ocean floor are more than 10 trillion tons of methane - twice the amount of all known coal , oil , and other fossil fuels . Methane ( CH4 ) is also 25 times more potent ...
... archaea may help keep this greenhouse gas in check Buried in the ocean floor are more than 10 trillion tons of methane - twice the amount of all known coal , oil , and other fossil fuels . Methane ( CH4 ) is also 25 times more potent ...
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