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Mill wheels placed alongside that flow can produce wonderful, clean energy, as can generators below high dams.
Here is an easy demonstration of how sun creates biomass.
The sun enables plants like corn and soybeans to grow and produce oils that in turn can be used to fuel machines producing alternative energy.Unlike gas and oil and coal, these sources of energy are renewable with every growing season.When air near the earth is heated by the sun, it rises high into the sky and cold air from elsewhere pours in to replace it.This pouring air is wind, and it is powerful enough to drive a sailing ship across the sea or turn the mighty blades of a generator in a windfarm.Every day, the sun draws billions of gallons of water up from the sea into the air where it condenses into clouds.In time these clouds shower the water back to earth, where it flows down again to the sea.