- Sep 19, 2011
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What causes global warming thousands of years ago?
These have been caused by many natural factors, including changes in the sun, emissions from volcanoes, variations in Earth's orbit and levels of carbon dioxide (CO2). Global climate change has typically occurred very slowly, over thousands or millions of years.
And yet where was the CO2 emissions by fossil fuels?
These have been caused by many natural factors, including changes in the sun, emissions from volcanoes, variations in Earth's orbit and levels of carbon dioxide (CO2). Global climate change has typically occurred very slowly, over thousands or millions of years.
What causes the Earth's climate to change? - British Geological Survey
Global climate change has typically occurred very slowly. However, research shows that the current climate is changing more rapidly.
www.bgs.ac.uk
And yet where was the CO2 emissions by fossil fuels?