Answer:
asthma, chronic obstructive pulmonary disease (COPD), pulmonary fibrosis.
Explanation:
Asthma: It can be caused by being exposed to viral infections, also contact with allergens. when your a infant your immune system isn't very strong, that's why it developes at younger ages (usually)
COPD: you can get this by being exposed to tobacco smoke, it can also be caused by being exposed to dusts and chemicals, and fumes from burning fuel.
Pulmonary Fibrosis: this can be caused by things like, Exposure to toxins like asbestos, or things like Coal dust, that's why it's common in coal miner's and the sandblasting industry.
