What are the functions of the human respiratory system

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• What are the functions of the human respiratory system class 10
• What are the main functions of the human respiratory system
• What are the primary functions of the human respiratory system
• What are the parts and functions of the human respiratory system
• What are the different parts and functions of the human respiratory system
• What are the main functions of the human respiratory and circulatory system
• What are the functions of the respiratory system in the human body
• Describe the functions of the human respiratory system
• Give the functions of the human respiratory system
• What are the main functions of the respiratory system in the human body
• What are the primary functions of the respiratory system in the human body
• What are the functions of respiratory system and circulatory system in the human body
• What are the main functions of the respiratory and circulatory systems in the human body