Why do species evolve during adaptive radiation? O to fill different niches
O to create variation
O to become reproductively isolated
O to provide evidence of evolution
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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.

they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b