Which is not a disease of the respiratory system?
O COPD
O Asthma
O Diabetes

I think non of them are correct. here is the reason

Explanation:

Diabetes has an impact on lung function, or how well you breathe. Some studies show that lung function gets worse as blood glucose levels increaseAsthma is a long-term disease of the lungs. It causes your airways to get inflamed and narrow, and it makes it hard to breathe.Chronic obstructive pulmonary disease (COPD) is a chronic inflammatory lung disease that causes obstructed airflow from the lungs. Symptoms include breathing difficulty, cough, mucus (sputum) production and wheezing

Hydrosphere is the correct answer