a These levels are based on Estimated Energy Requirements (EER) from the Institute of Medicine Dietary Reference Intakes macronutrients report, 2002, calculated by gender, age, and activity level for reference-sized individuals.
The definition of a channel is a waterway, a means of communication and a specific television or radio frequency. An example of channel is the English Channel. An example of channel is writing. An example of channel is Fox News.
Any medium (channel) that carries signals over a communications path, the route between two or more communications media devices. Three types of wired channels Twisted-pair wire (conventional telephone lines), coaxial cable, and fiber-optic cable.