Checked content  Effects of global warming  Did you know...  SOS
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Summary of climate change impacts.  The effects of global
warming are the ecological and social changes caused by the rise
in global temperatures. There is a scientific consensus that
climate change is occurring, and that human activities are the
primary driver. Evidence of climate change includes the
instrumental temperature record, rising sea levels, and
decreased snow cover in the Northern Hemisphere. According to
the Intergovernmental Panel on Climate Change (IPCC), most of
the observed increase in global average temperatures since the
mid-20th century is very likely due to the observed increase in
human greenhouse gas concentrations.  Projections of future
climate change suggest further global warming