transport moves substances from an area of high concentration to an area of low concentration.

Diffusion

Explanation:

Any single substance tends to move from an area of high concentration to an area of low concentration, until the concentration is equally divided in the space.

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.