Those are razor burn, they go away by their own after a while but to soothe any irritation try putting lotion or baby oil on it
It depends on how much you weigh and how fast you walk. Does it give how much this person weighs or how fast this person walks?
D stretching is the correct answer :D
Puberty, and there are many websites and books that offer information so you know what to expect.
Type II error is called false negative, that mean that you say the null hypothesis is right when it is not. In this case, the null hypothesis is "the drug is not safe". Then the error should be <span>to conclude the drug is safe when in, fact, it is unsafe</span>.