Climate change, or global warming, is caused mainly by burning fossil fuels (coal, oil, gasoline, and natural gas). This creates carbon dioxide (CO2), a gas that stores heat. CO2 and other gases that store heat are called greenhouse gases. Natural greenhouse gases are necessary for life on earth. Without them, we could not live because the earth would be too cold. However, excessive amounts cause global temperatures to rise forcing the climate to destabilize and the global ecosystem to be affected negatively.
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