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Title: The effects of smoking on human lungs
Description: IGCSE Biology. Checked by a Biology teacher giving A5 mark as a prep

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Victor Reznikov
04
...
14
Miss Aitken Biology
The effects of smoking on the lungs
There are a lot of lung diseases caused by smoking cigarettes such as Emphysema, Lung
cancer, bronchitis and harmless of carbon monoxide
...
Smoke damages the walls of
alveoli, which break down and fuse together again forming enlarged, air spaces
...
1 “The NHS says around 900,000
people in the UK have been diagnosed with COPD, and about two million people have the
condition, but have not been diagnosed
...

The lung cancer is also very dangerous disease
...
Cancer characterized by uncontrolled cell growth in tissues
producing tumors
...
Other
10% of people get cancer who had a combination of genetic factors and exposure to radon gas
...
About 90% of cases of bronchitis are caused by viruses
...
3
The one of the most dangerous chemicals in cigarettes is carbon monoxide
...
This can affect the amount
of hemoglobin available for the transport of oxygen throughout the body, which may in turn lead
to symptoms of CO poisoning
...
webmd
...
com/cold-and-flu/cold-guide/understanding-bronchitissymptoms
4

http://www
...
com/health-blogs/freedom-smoking/carbon-monoxide-cigarette-smoke


Title: The effects of smoking on human lungs
Description: IGCSE Biology. Checked by a Biology teacher giving A5 mark as a prep