1) what is light? a) it is a form of energy. b) the absence of light. 2) What is darkness? a) the absence of light. b) it is a form of energy. 3) Sun is a) Natural source of ight. b) Man- made source of light. 4) lamp is a) Natural source of ight. b) Man- made source of light. 5) What help you see? a) light b) sound c) air

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