DISS 331 SEU Risk Factors of CRD in KSA Discussion

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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?