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Nadusha1986 [10]
2 years ago
8

Help with number nine, and explain why please

Biology
1 answer:
damaskus [11]2 years ago
5 0
The answer is Carbohydrates
Sugar and carbohydrates are broken down into smaller versions called glucose. All cells in the human body depend on glucose. This makes carbohydrates the body's number one energy source. The brain and nervous system run directly off glucose.
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