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.
Weight gain: The good: This food is very low in Saturated Fat, Cholesterol and Sodium. It is also a good source of Dietary Fiber, and a very good source of Vitamin C, Vitamin K and Manganese. The bad: A large portion of the calories in this food come from sugars. Caloric Ratio Pyramid CALORIC RATIO PYRAMIDâ¢ This graphic shows you what percentage of the calories in a food come from carbohydrates, fats, proteins, and alcohol.