1. helps improve or maintain overall health
Left side
A:aorta
B:anterior vena cava
C:semilunar valve
D:right atrium
E:right vertride
F:posterior vena cava
Hunger is the need for food
I would say nutritional, physical, and mental. If that doesn't help try the My Plate website as it will tell you how much physical fitness and the diet you need for your age.