plz help me guys,urgently required
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Energy is the capacity of a physical system to perform work. Energy exists in several forms such as heat , kinetic or mechanical energy, light, potential energy , electrical, or other forms. Energy is the ability to do work. Energy sources could be classified as Renewable and Non-renewable.
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The best source for visitors is solar energy in summer and fuel (like petroleum) is the best energy source in any situation.
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