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 our lifeline that bathes us and feeds us. In ancient cultures water represented the very essence of life. The Romans were the first to pipe water into their growing cities, especially with their aqueducts.
The Importance of Clean Water. sidebarA. Fresh water is one of our most vital resources, and when our water is polluted it is not only devastating to the environment, but also to human health. The US relies on public water systems to treat and deliver just over 44 billion gallons of clean water each day to our homes, schools and businesses.