Answer:
B. constant practice and lots of patience
Explanation:
The gas contents of inhaled air and exhaled air are different because inhaled air is oxygen while exhaled air is carbon dioxide.
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There are several things teens can make to improve their wellness and health:
- have balanced diet with vegetables and fruits, and all vitamins and minerals the body needs
- <span>get 8-10 hours of sleep a night
- </span><span>perform 60 minutes of physical activity daily
- have good personal hygiene habits</span>