In a newspaper ad a scientist asked for volunteers to test a new theory on the speed of light by using a machine he invented how would you know that this is an unreliable newspaper ad

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.