Aliciaonfleek
18.11.2020 •
Biology
D How does it occur? Tick (ü) the best explanation.
⬜ You breathe out more carbon dioxide than is in the air that you breathe in.
⬜ Small hairs in the lungs push oxygen into the blood and remove carbon dioxide.
⬜ Red blood cells enter the lungs and pump oxygen into them and let carbon dioxide out.
⬜ Particles are always moving, so naturally move into places where there are fewer of them.
⬜ Oxygen particles swim to red blood cells; carbon dioxide particles swim away from them.
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