Knee replacements improve the lives of the people in need, yet it has a very wasteful side too. The knee replacement procedure creates about 30 pounds of waste, and about half of it is biohazardous material that needs to be disposed of in an energy-intensive safe way.
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A glacial valley, also known as a U-shaped valley, is a valley created due to the drift and weathering of land glaciers. The glaciers take
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