The cathedrals using Gothic architecture.
The devastating effects of biological and nuclear weapons is with no doubt the main fact behind the desire.The world recognizes that chemical,biological and nuclear weapons poses a serious threat to world peace especially if they fall into the wrong regimes and incapable nations. they also the capacity of these weapons to be used on an armed civillians.
Plague is a deadly disease that people are afraid of.
Answer: Because the way the hydrogen bonds causes molecules to push farther apart, which lowers the density.
