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Earth is a huge planet with seven continents, but human populations are not spread out evenly. Most people live in places where the climate is comfortable and where it is easy to find fresh water and grow food. Major population centers are usually located near rivers or coastlines.
Earth is a huge planet with seven continents, but human populations are not spread out evenly. Most people live in places where the climate is comfortable and where it is easy to find fresh water and grow food. Major population centers are usually located near rivers or coastlines.