Final answer:
Factors that contribute to hair and nail growth include nutrition and blood circulation.
Step-by-step explanation:
In biology, there are several factors that contribute to the growth of hair and fingernails. Two important ones are:
- Nutrition: Adequate intake of essential nutrients, such as vitamins (especially biotin), minerals (like iron and zinc), and protein, play a crucial role in hair and nail growth. These nutrients are required for the formation of keratin, the main structural protein in hair and nails.
- Blood circulation: Good blood circulation supplies the hair follicles and nail matrix with oxygen and nutrients, promoting their growth. Regular exercise, scalp massage, and a healthy lifestyle in general can help improve blood circulation.
By maintaining a balanced diet and promoting good blood circulation, you can provide the necessary conditions for hair and nail growth.
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