What is the maximum amount of time that foods can be held in the danger zone?

Which training principle states that exercising a certain body part are practicing a particular skill primarily develops that part or skill

Jared is sufffering from a problem on one knee. his doctor suspects nerve damage. what can jared's doctor test to confirm whether jared has a damaged nerve?

Which of these is most likely to prevent pregnancy? a. tracking of female body temperature to identify ovulation times b. proper condom use c. male withdrawal before ejaculation d. proper spermicide use