CBSE Class 9
Free courses
Science
Organization in Living World
Lesson 4 of 5 • 5 upvotes • 9:12mins
This is the 4th part of the chapter where I have finished discussing the chapter. Some important questions have also been addressed in this lesson.
5 lessons • 53m
Introduction
12:46mins
Diseases and its Causes
12:04mins
Infectious Agents
8:38mins
Principles of Treatment
9:12mins
Summary
10:58mins