What is selective catalytic reduction (SCR) and how does it work?

The exhaust gases are mixed with AdBlue (a urea solution) to form ammonia which is passed through an SCR catalyser within the main silencer. The catalyst helps attain reduction rates of up to 90% resulting in cleaner emissions to meet Euro 5 standards. Watch our video presentation explaining how our SCR technology works.

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.