How many minutes must the target heart rate be maintained in order for aerobic exercise to be beneficial? A. five
B. six
C. twelve
D. twenty

If you are caught in a flash flood, or sea water rushing your way, drive to the ground you can find. highest lowest nearest darkest

Whic disease reduces bone density and causes the bones to become brittle

Most of the world's booming population growth is occurring in countries that arenot highly industrialized. the high birthrates in these countries often result inlower standards of living. which of the following would be the best solution tothis global economic problem? o a. encouraging developing countries to participate in global tradeob. creating an international seed bank to protect biodiversityoc. forming strict regulations on greenhouse gas emissionso d. establishing international agreements to prevent overfishingis it a b c d