Over the course of 50 years, a single tree can generate $31,250 of oxygen, provide $62,000 worth of air pollution control, recycle $37,500 worth of water,and control $31,500 worth of soil erosion
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3/11/10
Four Seasons of Loneliness
Over the course of 50 years, a single tree can generate $31,250 of oxygen, provide $62,000 worth of air pollution control, recycle $37,500 worth of water,and control $31,500 worth of soil erosion
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