NatureSir Norman Lockyer Macmillan Journals Limited, 2007 |
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Zadetki 1–3 od 75
Stran 124
... carbon isotopes found in strata worldwide , corresponding closely to the exact time of the extinction . This series of spikes in the carbon - isotope level suggests that strange things were happening to the carbon cycle at this time ...
... carbon isotopes found in strata worldwide , corresponding closely to the exact time of the extinction . This series of spikes in the carbon - isotope level suggests that strange things were happening to the carbon cycle at this time ...
Stran 235
... carbon technologies Feinstein * Cut expected levels for 2020 by 25 % ; 1.5 % annual reductions thereafter Allowances based on means of electricity generation Climate Action Trust Fund established to commercialize new low- carbon ...
... carbon technologies Feinstein * Cut expected levels for 2020 by 25 % ; 1.5 % annual reductions thereafter Allowances based on means of electricity generation Climate Action Trust Fund established to commercialize new low- carbon ...
Stran 390
... Carbon lost from lakes Global Biogeochem . Cycles 21 , GB3002 ( 2007 ) An assessment of the carbon cycles of 41 lakes on five continents has put new global numbers on lakes ' contribution to carbon in the atmosphere . The lakes ' net carbon ...
... Carbon lost from lakes Global Biogeochem . Cycles 21 , GB3002 ( 2007 ) An assessment of the carbon cycles of 41 lakes on five continents has put new global numbers on lakes ' contribution to carbon in the atmosphere . The lakes ' net carbon ...
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