Iron. Iron is not a cancer causing substance while arsenic, nickel and polonium are.
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Answer:
1.Electric Clipper. One of the first barber tools one is likely to notice is the electric clippers. ...
2. Scissor. ...
3. Straight Razor. ...
4. Chair. ...
5. Hair Comb. ...
6. Mirror. ...
7. Electric Trimmer
Explanation:
How often something happens
