As to the role of rainforests as Carbon sinks -- notwithstanding the present scientific uncertainties concerning the overall process of climate change and CO circulation -- it can safely be said that worldwide reforestation or afforestation in all areas available for it can only take up , in numerical terms, a very small part of the present and historical emissions of CO (we should remember that the concentration of greenhouse gas in the atmosphere is the result of a very long term process of the order of 100 -150 years).
(Carbon; sinks; ) (the present scientific uncertainties; concerning; the overall process of climate change and CO circulation) (we; should remember; that the concentration of greenhouse gas in the atmosphere is the result of a very long term process of the order of 100 -150 years) Context(we should remember,List([375, 393))):(the concentration of greenhouse gas in the atmosphere; is; the result of a very long term process of the order of 100 -150 years)
we should remember,List([375, 393))
Carbon the present scientific uncertainties we the concentration of greenhouse gas in the atmosphere
sinks concerning should remember is
the overall process of climate change and CO circulation
that the concentration of greenhouse gas in the atmosphere is the result of a very long term process of the order of 100 -150 years
the result of a very long term process of the order of 100 -150 years