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 the singular term ends in -us, the plural is usually formed by changing the ending to

Dora experiences frequent headaches and was ordered by her doctor to take medicine for headache relief. what should she do so as not to abuse the medicine? take the medication as prescribed take an extra over-the-counter pill take double the dose of the prescribed medicine to make the headaches go away quickly take the medication to relieve her feelings of loneliness and depression

Which is a personal reason for using tobacco