Answer:
Eating enough protein is important for hair growth because hair follicles are made of mostly protein, and lack of protein in the diet would promote hair loss. Biotin is essential for the production of a hair protein called keratin, biotin supplements are often marketed for hair growth.
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I think the circulatory system is the best body system because we need the heart to stay alive, many people live with only one lung. but we need the respiratory system to let oxygen in, and let carbon dioxide out.
C i'm pretty sure the answer is C hope this helps
Answer: when you hit a soccer ball you want to hit with the top of your foot which gives you more power. you do not want to hit the ball with your toes because you could break your toes.
