what causes direct damage to the lungs?
cigarettes burning tissue hypothyroidism breathing hydrogen amoebae influenza
A B C D E F G H
Many people smoke cigarettes.
cigarettes cause direct damage to the lungs
what causes direct damage to the lungs? (A) cigarettes (B) burning (C) tissue (D) hypothyroidism (E) breathing (F) hydrogen (G) amoebae (H) influenza