If you have a chance to meet pulmonologist what questions are you going to ask about pulmonary respiration? (AS2)

The following questions can be asked about pulmonary respiration:

1. Why do humans respire by pulmonary respiration?

2. What role does hemoglobin play during respiration?

3. How deficiency of hemoglobin may impact on pulmonary respiration?

4. How does smoking affect breathing/ respiration?

5. What type of diagnostic tests will be performed to assess the function of lungs?