Biology Grade 10
Select Topic
10.1 Gaseous Exchange in Plants
10.2 Gaseous Exchange in Humans
10.2 Gaseous Exchange in Humans
10.2.1 The Air passageway
10.2.2 The Lungs
10.2.3 The Mechanism of Breathing
10.3 Respiratory Disorder
10.3 Respiratory Disorder
10.3.1 Bad Effects of Smoking
