electoronic devices
I'm not sure that "most used element" is a thing. Most used in what?Hydrogen is the most common element in the universe, but I have no idea what you mean by "most used."
the most important thing to have is mirror because it reflects lightwhich can be used as a communication device when asking for help
The most common material used is neoprene - the same thing that is used for wet suits
the most important thing is to cover it up with something that is clean and has not been used by anybody recently that has had an infection.
The most common thing that he used to eat is dates.
Most probably beauty, since the gods used to start wars over her.
The thing most people know about recycling it to reuse the substances. A thing once used, should be thought of using in some other way.
Next to cigarettes and Coke cans? Probably.
Maram is the most amazing thing alive today!!
they most thing they used to eat is wheat and fruits
The isomer Tc-99m was used as tracer in radiodiagnostic.
It's hard to say... In the Civil War, trains were a big way of transporting. The same thing with WW2. But in WW1, the train was the most used transportation.