Which of the following is true of the stage of a body of water? A. It is constant at all times of the year.
B. It is important only if the body of water is a watershed.
C. Bodies of water like rivers and ponds do not have a stage.
D. It needs to be measured frequently to get an accurate measurement of the water.

I think that your answer is D.

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.