Science Class 5 Human Body and Health

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

When we breathe in, we inhale different types of gases including oxygen. What happens to the gases that the body does not or cannot use?

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A They will be circulated around the body and then exhaled out
B The digestive system will absorb them and use them to create energy
C They are exhaled without being circulated around the body
D The lungs will convert some of them into oxygen

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When we breathe in, we inhale different types of gases including oxygen. What happens to the gases that the body does not or cannot use?

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