One reason that multiple approaches are often taken to answer a testable question is that scientists

a. have different educational backgrounds and experiences. b. want to determine the single best way to find an answer. c. often look for the quickest way to answer the question. d. get tired of using the same approach every single time.

have different educational backgrounds and experiences.

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.