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Are the chemicals found in cigarette smoke harmful ?
Yes
What is found in cigarette smoke
Nicotine , tar , carbon monoxide , high temperature of smoke
What are the harm they cause
Nicotine - makes arteries narrower , causes heart disease
Tar - can cause cancer , coats lungs reducing surface area , can cause alveoli to break apart (emphysema)
Carbon monoxide - stops red blood cells carrying so much oxygen
High temperature of smoke - stops cilia working so lungs are not cleaned and mucus collects
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