I believe that it relates to or involves free oxygen, if it is used in exercise- aerobic practices help improve the the efficiency of the body's cardiovascular system with absorbing and transporting oxygen.
Hope this helps
Your answer would be depressants. Such as alcohol.
Your answer would be true. Have a great day!!
check on little Darryl of coarse
C) Flexibility; the type and frequency of activity are on target for improvement in this area