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disadvantages wind turbine

relationship= angle of incidence= angle of refraction.

refraction= light= air to water= compare= refraction= light= passing into plastic.

simple device= improve lives= people using it.

increased= use energy resource= generate electricity= within developed countries= ethical implications.

electromagnetic wave= shortest wavelength

difference= ultraviolet= visible light.

red shift= direction= most galaxies= moving.

information= galaxy=measure size=red shift= galaxy produces.

observation= red shift= happening= universe.