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Unformatted text preview: Many densely populated regions now near geologically active zones. Population pressures will lead even more people to live near geologically active areas World Population Improved medical knowledge and mechanized agriculture since 1850. Has allowed human population to grow exponentially . Exponential growth: amount increases faster the larger it becomes. Human Impact on Environment: Examples Can change local ecology: change in vegetation = change in erosion Change surface water flow = desertification, change in flooding patterns. Change atmospheric chemistry: ozone, CO 2 = climate change Alter landforms: mining, building = increase erosion and flooding...
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- Spring '08