environmental problems had to do with such things as the elements, violent storms, extremes of heat and cold, darkness, the ever-present menace of wild beasts whose flesh was their food, yet who would eat them first unless they were quick in brain and body. Civilization's Changes But all that is changed. Man has subjugated all other creatures and now walks the earth its supreme sovereign. He has discovered and invented and builded until now we live in skyscrapers, talk around the world without wires and by pressing a button turn darkness into daylight. Causes of Failure
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