At 180 degrees longitude, the represents the point at which the eastern and western hemispheres experience different days.

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Ice melting no wait thats global warming

Master planned communities outside of chicago. note: population density means people living in an area per square mile. chicago, an urban and highly populated area has a much more higher density than a desert, amish community, settlement, or nomadic region.

Answer volcanic eruptionsseismic waves from earthquakes;