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CBSE Class 9

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Science

Our Environment

Summary 1

Lesson 12 of 13 • 0 upvotes • 9:10mins

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Trupti Dhamija

In this lesson we summarize the chapter

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CBSE IX Natural Resources

13 lessons • 1h 47m

1

Overview

3:00mins

2

Introduction

9:40mins

3

Winds and Rain

8:45mins

4

Air Pollution and Water Pollution

13:06mins

5

Soil.

11:09mins

6

Biogeochemical Cycles,

9:50mins

7

Biogeochemical Cycles II

7:00mins

8

Biogeochemical Cycles III

6:55mins

9

Questions 1

8:56mins

10

Questions 2

4:40mins

11

Questions 3

7:05mins

12

Summary 1

9:10mins

13

Summary 2

7:51mins

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