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.
Top five reasons why water is important to our everyday life. Drinking water can help your heart, brain, weight, wallet and fatigue issues. In a recent article from SHAPE magazine, the top six reasons â beyond water being the basis of life â are given, according to Yahoo Shine. We chose five of those reasons for why drinking water solves any problem: 1. Drinking a large amount of water could help prevent heart attacks.