Carcinogens is a substance that responsible for the causes of cancer, it may be a chemical substance such as some certain molecules in tobacco smoke. Cancer may cause by environmental agents, viral or genetic factors.
☆ What is hardware? Ans= The physical and machanical parts of a computer system , such as the electric circuit, chip,moniter,disks,disk drivers,keyboard and e.t.c. ☆In easy word Ans= The part of computer which we touch is called hardware.
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