Just as you "step" outside of our Earths ozone layer everything there it will kill you if not for the special suits! Radiation, space vaccum, pressure, temperature, etc is not human species friendly! That's why we need The ozone layer, without which we would not survive more than a few days on this planet!
B) kuwait has a much smaller population than saudi arabia is the only one that makes sense and it its true
One effect that plentiful harvests had on ancient civilizations of the mainland's river valleys was to help have larger populations and the need to have materials to survive.