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q |
Orbital procession affects solar radiation at low latitudes
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è solar radiation affects the strength of low-latitude
monsoons
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è monsoon fluctuations changes the precipitation amounts
in Southeast Asia
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è heavy rainfalls increase the amount of standing water
in bogs
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è decaying vegetation used up any oxygen in the water and
creates the oxygen-
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free conditions needed to generate methane
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è the extent of these boggy area must have expanded
during wet monsoon
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maxima and shrunk during dry monsoon minima.
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