The lower boundary of the exosphere is called the exobase. It is also called exopause and 'critical altitude' as this is the altitude where barometric conditions no longer apply. Atmospheric temperature becomes nearly a constant above this altitude.
Sodium â the volatility and solvent mineral: essential to life, all body fluids contain sodium â itâs needed for many biochemical processes including water balance regulation, fluid distribution on either side of the cell walls, muscle contraction and expansion, nerve stimulation and acid-alkaline balance.
Kidneys help regulate the blood. When your kidneys are working properly, excess minerals and waste products leave the body in urine. Sodium (salt) and potassium are minerals that come from food. The body needs these minerals to maintain good health, but they must be kept at the correct level.