This article was written in 1982, when rehabilitating many retired hydropower sites was being given consideration in Minnesota. In fact, very few sites have had hydropower reinstalled because of the poor economic...
This lesson introduces students to the basics of wastewater treatment. Topics include the variety of materials that enter the wastewater system, septic tanks, and municipal treatment systems. Students can review online...
This lesson introduces students to the use of flowing or falling water (hydropower) to perform work, particularly electric power generation. Topics include the history of hydropower development, the invention of...
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