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| Frage | Antworten |
| Carbon monoxide | -combines with haemoglobin -reduces oxygen amount carried by blood cells |
| Tar | -collects in the lungs -full of toxic chemicals -some toxic are carcinogens; make tumours more likely |
| Low birth weight babies | low oxygen in the blood of pregnant women deprives the fetus of oxygen, leading to a small baby at birth |
| cilia | -little hair-like structures in the lungs -clears lungs from toxins |
| Smoker's cough | cilia is damaged and can't clean the lungs excess mucus begins to build up and sticks to air passages causing a terrible cough with phlegm |
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