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Cars contribute approximately 15-20% of global carbon dioxide emissions, depending on the region and the specific transportation systems in place. In the United States, for example, transportation as a whole accounts for about 29% of greenhouse gas emissions, with cars and light-duty trucks being the largest contributors within that sector. Efforts to reduce emissions from vehicles, such as increasing fuel efficiency and promoting electric vehicles, are crucial for mitigating climate change.

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3w ago

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