In general, foods are made up of carbohydrates, proteins, and fats, each of which provide a different number of calories: 1  Carbohydrates provide 4 calories per gram. 2  Proteins provide 4 calories per gram. 3  Fats provide 9 calories per gram.
Importance of Water. Water is used for various important purposes: Water in Agriculture. Water plays the most important role in agriculture. Agriculture is impossible without irrigation throughout the crop season. Irrigation ensures proper plant growth.
Water and The Brain by Dr. Corinne Allen www.brainadvance.org Why is Water So Important for the Brain? The Brain is 85% water. Optimal brain function depends on water and lots of it. Water is what keeps the brain signals going. When the quality of water is compromised the signals are short circuited. Water supports DNA and is the largest single source of energy. The brain has no way to store water and dehydration comes if all the water lost in a day is not replaced and this deficiency is accumulated.