First comes non-rem sleep, followed by a shorter period of rem sleep, and then the cycle starts over again
A peer is someone who is the same age as you, and they do not have to even know you. You might be friends, you might not. They might be a student that's in the same grade as you.
basically, a peer is a student that is around your age.
Not having your germy hands on people's food.
The risk of infectious disease might be high in a community that has no water treatment facility because gems spread faster through water , most viruses also are usually spread faster on untreated water.