2. Brain Teeth Lung Liver Skin Bone Heart Kidney Muscles Blood

3.  Water is vital to our organization.  The adult body contains 60% of water ; It is 70 % for a Child  The brain is the organ that contains the most water (85%) followed by the kidney (80%)

4.  Drinking water : 1.5 liter per day  Food Water : 0.9 liter per day  Water produced from the combustion of food : 0.6 liter per day

5.  Breathing : 0.5 liter  Transpiration : 0.9 liter  Urine : 1.5 liter  Soddle : 0.1 liter

6.  Saliva : about 1 liter per day  Gastric juice : between 2 and 2.5 liter  Bile : 0.5 liter  Pancreatic juice : 0.7 liter.  Intestinal secretion : about 3 liter.  The blood contains about 3 to 4 liter of water.

7.  Calcium : good for bones strength and growth of children. Tap water can cover 15 to 25% of daily needs.  Magnesium : important for the functioning of muscles,for blood quality and for the protection of the brain.  Fluorine: who is involved in the protection of theeth against cavities.