Does protein have more calories than fat

NO
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Fat has more than twice as many calories per gram as carbohydrates and proteins. A gram of fat has about 9 calories, while a gram of carbohydrate or protein has about 4 calories. In other words, you could eat twice as much carbohydrates or proteins as fat for the same amount of calories.

What is a question answer because there is no answers and i need answers for the question

The reactants are co_{2} aka carbon dioxide and h_{2}o aka water along with light energy