People addicted to smokeless tobacco can develop thick leathery white spots in the mouth what are the spots

Is it ok to have a tooth growing on my crotch and this is school related

When calculating the daily protein needs for marathon runners or competitive weightlifting, you should allow for approximately grams of protein per kilogram of body weight

Mary is 14 year old her resting heart rate is 70 beats per minute. calculate 50% of mary's maximum heart rate to fine her target heart rate