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.
Nutritional Value. Pistachios are a rich source of energy that comes mainly from fats. One cup of raw pistachios provides 685 calories in a caloric ratio of 67 percent fat, 20 percent carbohydrates and 13 percent protein. About 33 percent of the fat is saturated, whereas the remainder includes unsaturated varieties such as omega-3 and omega-6 essential fatty acids.