plz send me the answers of english lesson one earth to one world class 7
book name is communicate in english class 7
its urgent
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Early Light Bulbs
In 1802, Humphry Davy invented the first electric light. He experimented with electricity and invented an electric battery. When he connected wires to his battery and a piece of carbon, the carbon glowed, producing light. His invention was known as the Electric Arc lamp.
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