Exercise can prevent heart disease but once you've had a heart attack, it's too late for exercise to you.

Calvin is a 12-year-old boy. due to pressure from his friends, he has started consuming certain toxic materials that are addictive and harmful. calvin is a victim of what type of abuse? a. sexual b. substance c. physical d. emotional

Which of the following choices are the fat soluble vitamin? a) c b) b6 c) d d) calcium

During polarization,potassium has a blank charge,sodium has a blank ch arge ,and calcium has a b l ank. charge