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3 votes
What mix oxygen in the blood?

User MrShoot
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1 Answer

3 votes

Answer:

haemoglobin

Step-by-step explanation:

Inside the air sacs, oxygen moves across paper-thin walls to tiny blood vessels called capillaries and into your blood. A protein called haemoglobin in the red blood cells then carries the oxygen around your body.

User Kayhan Asghari
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