d) What are the harmful effect to the respiratory system of the following harmful substances in the
cigarette smoke.
Apakah kesan buruk terhadap sistem pernafasan manusia bagi bahan yang terdapat dalam asap
rokok berikut:
a) Nicotine : cause addiction
b) Tar : blackens the lungs
c) Carbon monoxide : reduce the amount of oxygen in blood
No comments:
Post a Comment