Convection is of two types: natural and forced. Heated air rising is an example of natural convection. Hot air has a lower density than that of the cooler air in the atmosphere above it and therefore is buoyant; as it rises, however, it loses energy and cools.
Your best good carbs sources are from this healthy carbohydrates list: 1  Raw and lightly steamed vegetables, 2  Legumes, beans, nuts and seeds, 3  High fiber 100% whole grains,4  Raw, whole, fresh fruits, 5  Most low fat dairy.our best good carbs sources are from this healthy carbohydrates list: 1  Raw and lightly steamed vegetables, 2  Legumes, beans, nuts and seeds, 3  High fiber 100% whole grains,
Carbohydrates in Fruits. Like vegetables, fruits are good sources of fiber, vitamins and minerals that the body needs in addition to carbohydrates. Fruits tend to have a higher amount of carbohydrate than vegetables, especially dried fruits because they contain a higher concentration of sugar and less water.The fruits that are lowest in carbohydrates include berries, such as strawberries and blackberries, cantaloupe and honeydew.These fruits contain 8 grams of carbohydrates or fewer per 1/2-cup serving. By contrast, bananas are the highest in carbohydrates with 27 grams in one medium-sized serving.arbohydrates in Fruits. Like vegetables, fruits are good sources of fiber, vitamins and minerals that the body needs in addition to carbohydrates. Fruits tend to have a higher amount of carbohydrate than vegetables, especially dried fruits because they contain a higher concentration of sugar and less water.