General science Grade 9
Select Topic
5.1 Diseases caused By Germs
5.1 Diseases caused By Germs
5.1.1 Viral Diseases
5.1.2 Bacterial Diseases
5.1.3 Fungal Infection
5.1.4 Parasitic Diseases
5.2 Agents spreading Germs
5.3 Protection from Germs
5.4 Harmful Effect of Smoke and Smoking
5.5 Mental illness
5.6 Drugs