The ocean variability is a fundamental part of the climate system rather than climate change. The antropogenic factor are human activities which affect the climate. Of the most concern in this anthropogenic factors is the increase in CO2 levels due to emisions from fossil fuel combustion. This human influences affect to the Claciers, that are considered among the most sensitive indicators of climate change. Their size is determined by a mass balance, between snow input and melt output, and morerover the sea level change for much of the last century with un improved measurement of global sea level change. The historical abundance of various fish species has been found to have a substantial relationship with observed climatic conditions. Changes in the primary productivity of autotrophs in the oceans can affect marine food webs. The reporter is very good.
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