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docker41 [41]
3 years ago
13

How does oxygen enter your bloodstream? Please help

Biology
1 answer:
AleksandrR [38]3 years ago
7 0

Answer:

haemoglobin

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

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Answer:

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Explanation:

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