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What is the critical difference between today's global warming and Eath's previous climate changes?
Wiki User
∙ 11y ago
- Earth's previous climate changes were natural and took place over tens of thousands of years.
- Today's global warming is caused by human activity (the burning of fossil fuels and deforestation) and is happening very quickly (gradually since 200 years ago and then very rapidly since 1980).
Wiki User
∙ 11y ago
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