Gas that fills up red blood cells so oxygen can't - Carbon Monoxide, Addictive substance - Nicotine, Black sticky substance - Tar, Condition where blood flow is blocked in the heart - Heart Attack, Condition where blood flow is blocked in the brain - Stroke, Condition where alveoli are damaged in the lungs - Emphysema,

Leaderboard

Estilo ng visual

Mga pagpipilian

Magpalit ng template

Ibalik ng awtomatikong pag-save: ?