Match the story elements with their definition.

e to 3, d to 2, c to 4, a to 1, and b to 5.

Explanation:

brainliest plz

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

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.