What was the most common motivation given by girls for engaging in sexual intercourse for the first time?

The outermost layer of your teeth is called the enamel and is made of?

Which one of the following causes people to go through a cycle of losing weight, gaining it back, then lose it again

Andrew feels good about himself. he doesn't know exactly why he is so happy, but every day he looks forward to his schoolwork and chores. "i play a game," he says. "i make a list of everything i have to get done, and then i try to finish it all before a certain time. for some reason, i feel great when i beat my time." based on this information, why is andrew happy? he gets a proper amount of sleep he eats healthy meals he has a strong family support group he regularly meets his own goals