How does the formula for water tell you that there is only one oxygen atom in a water molecule ?

eukarya because is is like alche and b is bacteria and d is animals

explanation:

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.