Скачать или смотреть Environment Chemistry, Composition of Atmosphere | Chapter 10 Lec 1 | 9th Chemistry | New Book 2025

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This is Lecture 1 of Chapter 10 – Environmental Chemistry, from the 9th Class Chemistry – New Syllabus 2025 (Punjab Board).

In this lecture, we cover:

✅ Introduction to environmental chemistry
✅ Importance of environmental awareness
✅ Major components of the environment
✅ Composition of the atmosphere and its layers

This lecture sets the foundation for understanding the role of chemistry in environmental protection and sustainability.


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