Explain the concept of “survival of the fittest.”

The best ones get to survive and reproduce. if you can adapt to your environment you will get to have kids and pass on those helpful traits from you to your kids which can help them survive in the same environment.

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.