declamation topic: The ozone layer and solar radiation. time limit 3-5 minutes.
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Breathing ozone can trigger a variety of health problems including chest pain, coughing, throat irritation, and congestion. It can worsen bronchitis, emphysema, and asthma. Ground-level ozone also can reduce lung function and inflame the linings of the lungs. Repeated exposure may permanently scar lung tissue
Niriya0811:
I said I need topic for 3-5 minutes
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