CBSE Class 9
Free courses
Science
Organization in Living World
Lesson 1 of 5 • 31 upvotes • 12:46mins
This lesson is an introduction to the topic and also discusses the first two pages of the chapter along with the activity.
5 lessons • 53m
Introduction
12:46mins
Diseases and its Causes
12:04mins
Infectious Agents
8:38mins
Principles of Treatment
9:12mins
Summary
10:58mins