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20. is a common upper respiratory system disorder. O A. COPD OB. Asthma OC. A cold OD. Pneumonia
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40 votes
40 votes
20.

is a common upper respiratory system disorder.
O A. COPD
OB. Asthma
OC. A cold
OD. Pneumonia

User Ryan Fitzpatrick
by
2.7k points

1 Answer

14 votes
14 votes
B. Asthma because It is fairly common for people to be born with asthma.
User Jcesarmobile
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