Well, some deodorants do contain Triclosan, which by some is considered carcinogenous. But blaming cancer strictly on deodorants would be pretty much like blaming getting drunk on the last drink only.
No, you cannot get cancer from scratching too much.
You can get cancer because too much sun destroys the skin tissues causing cancer.
The cancer caused from tanning beds or too much sun is skin cancer.
Yes, skin cancer.
No
By putting as much description but not too much
No
No.
cells dividing too much
People putting it in.
There is no evidence suggesting that you can get cancer from being on electronics too much. Though you should get out and exercise often instead of just being on electronics.
Yes after a while you can get skin cancer.