Science Class 5 Human Body and Health

Asked by AKSHAY GURU VARADHARAJAN · SRI CHAITANYA TECHNO SCHOOL, JAYANTI NAGAR.

What is the main function of the respiratory system?

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Answer: D. Obtain oxygen from air for the blood

Option D is correct: When you inhale, your lungs take in oxygen from the atmosphere. This oxygen passes into your bloodstream, which carries it to every cell in your body to produce energy.

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