The answer that you are looking for is A. Nephrons
Answer:
i) Emphysema
ii) Chronic bronchitis
iii) COPD ( Chronic obstructive pulmonary disease)
Explanation:
They all above given diseases cause permanent damage to lungs. Smoking is a major factor causing these diseases.
If you and your friend have different standards in staying clean you may have disputes over how you guys share a room. If you are in a relationship you can have disputes with the standard of love or involvement in the relationship.