The ozone layer helps prevent harmful UV rays from entering the atmosphere.
Color I believe because if a diamond was the same color as coal(black) you couldn’t tell a difference
No they are lower because they don't go so high.
Hello there!
Usually, the procedures you should follow is using hand sanitizer or just washing your hands. That can help remove some microbes, but it is inevitable to not get any germs on you
^Hope it helps
