In residential systems the multi-layer pipe MIXAL 16x2, while in industrial systems MIXAL 20x2. In renovations PEXAL 14x2 is used whereas in high power snowmelt systems the PEXAL 26x3 pipe is used. More.
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.