What unit would you use to measure the thickness of a hair?

Units aren't used to measure anything. After you complete the measurement using equipment suited to the purpose, you use units to describe the result of your measurement, and to tell other people about it. I would measure the thickness of a hair using a micrometer, and express the result in millimeters.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.