Name the various respiratory diseases that may occur due to air pollution.

a- Bronchitis characterized by the inflammation and swelling of the air passages between nose to lungs and throat to lungs

b- Immune system defects; it occurs due to constant breathing in polluted air

c- Pneumonia- an infection of lungs caused by breathing a flying bacteria

d- Asthma attacks because of inhaling various poisonous gases and constant suffocation owing to polluted air