Our Environment - NCERT Solutions | Class 10 Biology Chapter 13 | Board Exam 2025

📌 In this video, Khushboo Mam explains the important concepts and NCERT solutions of Class 10 Biology Chapter 13: Our Environment. This session covers key topics such as ecosystem an d its components, food chain and food web providing clear explanations and in-depth insights. Designed for Board Exam 2025 preparation, this video will help you understand and master all the essential topics from the chapter. ▶️ Biology Full Playlist - https://vdnt.in/G5fs7 ✍️ Session PDF - https://vdnt.in/Gfjsa ------------------------------------------------------------------------------- Important Time Stamps 00:00-2:12 = Introduction 2:13-6:10= Question 1. Why are some substances biodegradable and some non-biodegradable? 6:11-8:46= Question 2. Give any two ways in which biodegradable substances would affect the environment. 8:47-11:21= Question 3.Give any two ways in which non-biodegradable substances would affect the environment. 11:22-14:46= Question 4. What are trophic levels? Give an example of a food chain and state the different trophic levels in it. 14:47-16:32= Question 5. What is the role of decomposers in the ecosystem? 16:33-20:10= Question 6. What is ozone and how does it affect any ecosystem? 20:11-22:09= Question 7. How can you help in reducing the problems of Waste disposal? Give any two methods. 22:10-23:04= Question 8.Which of the following groups contain only biodegradable items? 23:05-23:29= Question 9. Which of the following constitute a food chain? 23:30-24:19= Question 10. Which of the following are environmental- friendly practices? 24:20-26:40= Question 11. What will happen if we kill all the organisms in one trophic level ? 26:41-28:18= Question 12. Will the impact of removing all the organisms in a trophic level be different for different trophic levels? Can the organisms of any trophic level be removed without causing any damage to the ecosystem? 28:19-31:21= Question 13. What is biological magnification? Will the levels of this magnification be different at different levels of the ecosystem? 31:22-32:16= Question 14. What are the problems caused by the non- biodegradable wastes that we generate ? 32:17-33:29= Question 15. If all the waste we generate is biodegradable, will this have no impact on the environment ? 33:30-35:45= Question 16. Why is damage to the ozone layer a cause for concern? What steps are being taken to limit this damage ? -------------------------------------------------------------------------------- ✅ Download Class 11 Midterm FREE RESOURCES With Solutions👉 https://vdnt.in/FAbHH ✅Vedantu 11, JEE & NEET PRO Course Admission Enquiry Form👉 https://vdnt.in/FNYgg --------------------------------------------------------------------------------- 📲💻 Join Vedantu 9,10 &11 📲💻 Telegram Channel 👉 http://bit.ly/4cgW72K Instagram Channel👉   / vedantuclass9l10l11   --------------------------------------------------------------------------------- ▶️ ⏮️NEETX by Vedantu:    / @vedantusankalpclassxi   ▶️ ⏮️Vedantu Class 9 & 10:    / @newvedantu9and10   --------------------------------------------------------------------------------- ▶️Roadmap for Class 11 CBSE 2025 | Motivation, Strategy, Tips & Tricks👉    • Roadmap for Class 11 CBSE 2025, JEE &...   ▶️Zorr Series (One-Shot) | CBSE Class 11, JEE & NEET📚 Physics👉    • Class 11 Physics: Zorr Series(One Sho...   Biology👉    • Class 11 Biology: Zorr Series(One Sho...   Chemistry👉    • Class 11 Chemistry: Zorr Series(One S...   Math👉    • Class 11 Math: Zorr Series(One Shot) ...   Economics👉    • Class 11 Economics: Zorr Series(One S...   ▶️Rudra Series (Topic-wise) | CBSE Class 11, JEE & NEET📚 Physics👉    • Class 11 Physics: Rudra Series(Topic-...   Biology👉    • Class 11 Biology: Rudra Series(Topic-...   Chemistry👉    • Class 11 Chemistry: Rudra Series(Topi...   Math👉    • Class 11 Math: Rudra Series(Topic-wis...   Economics👉    • Class 11 Economics: Rudra Series(Topi...   ▶️Abhyas Series (Questions) | CBSE Class 11, JEE & NEET📚 Physics👉    • Class 11 Physics: Abhyas Series(Quiz ...   Biology👉    • Class 11 Biology: Abhyas Series(Quiz ...   Chemistry👉    • Class 11 Chemistry: Abhyas Series(Qui...   Math👉    • Class 11 Math: Abhyas Series(Quiz & Q...   Economics👉    • Class 11 Economics: Abhyas Series(Qui...   #class10 #boardexam2025 #ncert #cbse #class10boards #class10ourenvironment #ourenvironmentclass10 #khushboomam