Sidee bay diyaaradaha duulaya hawada sare ugu sii socon karaan?
Diyaaradaha duulaya ayaa sida caadiga ah waxaa kor u qaada diyaarad matoor leh ka dibna waxay isticmaalaan hawada kor u kacaysa ee ka timaadda dabeecadaha cimilada dabiiciga ah sida kuleylka, hirarka buuraha ama kor u qaadista buuraha si ay u sii joogaan.