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Health of Human Respiratory System (2)
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Example of substances that are harmful to the human respiratory system (2)
Carbon monoxide
Example of substances that are harmful to the human respiratory system (3)
Sulphur dioxide
Example of substances that are harmful to the human respiratory system (4)
Nitrogen dioxide
Example of substances that are harmful to the human respiratory system (5)
Haze, dust and pollen
Cigarette tar
Is one of the toxic substances found in cigarette smoke
The effect of cigarette tar on the human respiratory system (1)
Cigarette tar in inhaled air sticks to and kills cells in the air passage such as the thorax, pharynx, epiglottis, larynx, bronchi, bronchioles and alveoli
The effect of cigarette tar on the human respiratory system (2)
Cigarette tar also increases the production of mucus and phlegm in the lungs
Examples of substances in cigarette smoke that can cause lung cancer
Cigarette tar
Harmful substances found in cigarette smoke (1)
Cadmium (Alkaline battery)
Harmful substances found in cigarette smoke (2)
Stearic acid (Candle)
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Health of Human Respiratory System (2)
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