The answer is : increased resistance need to be added to the muscles.
Muscle conditioning refer to muscle strength and endurance. In order to improve it, you need to put your muscle in a harsher condition in a harsher condition than it used to be, so your muscle could adjust to it. That's why you should keep increasing the resistance
The skin is the important part of the integumentary system (main part actually)
Answer: A. once you have sexual intercourse, you will keep exposing yourself to the risk of STIs and pregnancy.
Explanation: Absistence is a good idea for teenagers to prevent the guilt and pain that comes with sexual intercourse outside the bounds of marriage. Also it help prevents unwanted tennager preganacys and prevents and contracting plus spreading STIs.
Answer:
This isn't the kind of question people are supposed to post. be careful asking these because people will report them to the mods.
