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precipitation that incorporates anthropogenic acids and acidic materials; ph below 5, H2SO4; HNO3
Active Solar Heating
generally pump at a heat absorbing fluid medium through a small collector, such as air or water
Army Corps of Engineers
provide vital public security, energize the economy, reduce risk for disasters
Aswan High Dam
It was built in 1956 to control the flooding of the Nile River. The dam gives Egyptian farmers a more dependable source of water for their crops. It also gives Egypt electrical power.
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