Greenhouse gases build up in atmosphere, Planet gets warmer (global warming), Cars produce exhaust fumes, Poor air quality, breathing difficulties, Rainforests are cut down, Endangered species lose their habitats, Pesticides kill insects, Less food available for birds and animals, Ice melts at the poles, Sea levels rise, causing flooding, Number of cars increases every year, Serious congestion and smog in cities, Modern farming methods, Bad effect on the food chain

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