Saudi Electronic University Chronic Respiratory Diseases Discussion

I’m working on a health & medical question and need guidance to help me learn.

Chronic respiratory diseases (CRDs) are diseases of the airways and other structures of the lung. Some of the most common is a chronic obstructive pulmonary disease (COPD), asthma, and occupational lung diseases. Please give an overview of the risk factors of CRD and methods of prevention of CRD in KSA?