Answer:
Girls have menstrual cycles because girls have changes of hormones in their body. The hormones make the lining of the uterus build up. This gets the uterus ready for an egg which when the egg is released it causes a period also known as a menstrual cycle which happens normally every month for at least 3-7 days.
Explanation:
Answer:
D
Explanation:
Because substance abuse is a Health problem
Answer:
false; you'd need to be extremely careful and be on your toes all the time, something that is almost humanly impossible.
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9 ½ hours
The average amount of sleep that teenagers get is between 7 and 7 ¼ hours. However, they need between 9 and 9 ½ hours studies show.
Prejudice is the option B, a negative and unjustly formed opinion, usually against people of a different racial, religious, or cultural group.