CDMA (Code Division Multiple Access) and GSM (Global System for Mobiles) are shorthand for the two major radio systems used in cell phones. Both acronyms tend to group together a bunch of technologies run by the same entities. In this story, I'll try to explain who uses which technology and what the real differences are.
Dairy. Dairy products provide nutrients that are critical for bone health, including calcium, potassium and vitamin D. Dairy is also a source of protein. The benefit dairy provides for bones makes consumption especially critical for growing children, whose bone mass is developing.
Foods from different food groups provide all essential nutrients required for health. Carbohydrates, proteins, fats, water, vitamins and minerals are the six classes of nutrients that your body needs for survival, growth and to maintain health. A balanced diet comprising whole grains, fruits, vegetables, meat and dairy foods is the best way of ensuring that you are getting all these nutrients.