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How the world went from 170 million people to 7.3 billion

How the world went from 170 million people to 7.3 billion

An environment is a system of living things. The earth is our environment. The capacity of our environment to provide space, to produce food, and to supply energy are all limited. Humans thrive less than 17% of the earth’s surface, and only about 4% will grow crops. We depend on ...

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