The term convection generally refers to the movement of fluids, meaning liquids and gases, but in the earth sciences, convection also can be used to describe processes that occur in the solid earth. This geologic convection, as it is known, drives the plate movement that is one of the key aspects of plate tectonics.
The recommended range is 45 â 65% of calories as carbohydrate. For example, if you eat 1600 calories per day, and 50% of those calories are carbohydrate, you would eat 200 grams per day. Athletes need to eat at the high end of the carbohydrate range, to fuel training and competition.
Most of us are aware that different food products contain different amounts of calories. A product high in calories will give your body more energy. Your body needs approximately 2,000 calories per day if you are female and 2,500 if you are male. If your calorie intake exceeds this requirement and you do not use up the calories, no matter what food source the calories have come from, the body will store the excess as fat. Products that are high in fat are usually highest in calories.