1: seniors in high school because that is when everyone is wanting to be the most popular.
2: ????
3:???
Answer:
It has a low density and opaque.
Explanation:
As it is opaque, the reading of the thermometer can be read accurately
True, sleep problems indeed are a quite often occurence among children as well as adults - they do occur quite often but don't necessarily occur all the time for people to whom it does happen. At the same time, when someone suffers from sleep problems, this doesn't necessarily mean that he cannot sleep at all.
Answer:
breathing while running
Explanation:
because their is oxygen going in and due to run no oxygen is coming best of luck