Which is a diagram that shows the flow of energy among different trophic levels? O A. Energy pyramid O B. Food chain O C. Solar energy O D. Food web​

A

Explanation:

an energy pyramid shows the flow of energy in the different trophic levels.

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Energy pyramid

Explanation:

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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.

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.