Jawapan

2016-10-10T14:52:39+08:00
A diesease of reapiratory system,the alveoli are enlarged and damaged causing the efficiency of the absorbtion of oxygen decrease
2016-10-10T14:53:31+08:00
Keadaan peparu yang teruk disebabkan oleh tabiat merokok atau pendedahan kpd bhn cemar dan asapĀ 
- dinding alveolus terurai
- pertukaran gas tersekatĀ 


thankyou yahh!
most welcome