Our Environment Class 10 - Notes, Mind Map, MCQ And Extra Questions With Answer (CBSE)

Our Environment Class 10 - Notes, Mind Map, MCQ And Extra Questions With Answer (CBSE)
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Welcome to our comprehensive guide on 'Our Environment' for Class 10 students. In this article, we will provide you with detailed notes, a mind map, multiple-choice questions (MCQs), and extra questions with answers to help you excel in your CBSE exams.

Click here to download Our Environment class 10 worksheet with answer including MCQ

Understanding our environment is essential in today's world where environmental issues are becoming increasingly prominent. As young learners, it is crucial to be aware of the challenges our planet faces and the measures we can take to protect it. Our notes cover important topics such as ecosystem, biodiversity, natural resources, pollution, and conservation.

We have crafted a mind map to visually represent the interconnectedness of these topics, making it easier for you to grasp and remember key concepts. Additionally, our collection of MCQs and extra questions will test your knowledge and ensure you are well-prepared for your examinations. We have provided detailed answers to help you understand the reasoning behind each option. With our comprehensive study materials, you will gain a deeper understanding of 'Our Environment' and enhance your performance in the CBSE exams. So, let's dive in and explore the fascinating world of environmental science!

In the realm of CBSE Class 10 Science, Chapter 13, titled Our Environment, holds a special place as it deals with the crucial and ever-relevant topic of environmental science. This chapter is essential for Class 10 students, as it provides them with an understanding of the delicate balance of our ecosystem and the impact of human activities on it. At Witknowlearn, students can find comprehensive resources to thoroughly grasp the concepts of Our Environment in a manner that is both engaging and educational.

The Our Environment class 10 notes available on Witknowlearn are meticulously crafted to cover all the key aspects of the chapter. These notes delve into various environmental components, such as ecosystems, food chains, and the significance of different organisms in maintaining ecological balance. The notes on Our Environment class 10 are presented in a straightforward and easy-to-understand format, ensuring that all students, regardless of their prior knowledge, can grasp these vital concepts.

For a more interactive learning experience, Witknowlearn also offers Our Environment class 10 MCQs. These Multiple Choice Questions are an excellent tool for self-assessment and help students prepare for their exams by testing their understanding of the chapter's content. The MCQs cover a wide range of topics and are designed to challenge and refine the students' grasp of environmental science.

To aid in the visualization of the interconnectedness of ecological concepts, the Our Environment class 10 mind map is an invaluable resource. Mind maps help in organizing and connecting different ideas, making it easier for students to recall and apply the information during exams.

For students looking to delve deeper into the subject, Our Environment class 10 extra questions provide an opportunity to explore more complex and thought-provoking aspects of environmental science. These additional questions encourage critical thinking and a deeper understanding of the human impact on the environment.

In the broader context of the CBSE curriculum, Our Environment class 10 plays a pivotal role in creating awareness among young minds about environmental conservation and sustainable living. The comprehensive coverage of this chapter on Witknowlearn, through detailed notes, mind maps, MCQs, and extra questions, ensures that students are not only well-prepared for their exams but also become more conscious and responsible towards the environment. As we face global environmental challenges, the knowledge gained in this chapter becomes increasingly important, making CBSE Our Environment class 10 a key component of the science curriculum.

Biodegradable and Non-Biodegradable Wastes

Biodegradable waste refers to any material that can be broken down and decomposed by natural organisms like bacteria, fungi, and other biological processes. This includes items like food scraps, paper, wood, and certain types of plastics made from natural materials.

These wastes are environmentally friendly as they return to the earth and enrich the soil. On the other hand, non-biodegradable waste cannot be easily decomposed by natural processes.

These materials, including most plastics, metal, glass, and synthetic fabrics, persist in the environment for a long time, often leading to pollution and harm to wildlife and ecosystems. Understanding the difference between these two types of waste is crucial for effective waste management and for reducing the environmental impact of human activities.


An ecosystem is a complex network of living organisms (plants, animals, and microorganisms) and their physical environment, interacting as a system.

These interactions involve the transfer of energy and nutrients in a cycle, making ecosystems dynamic and self-sustaining.

Ecosystems can be as small as a pond or as large as a forest or a desert. They play a critical role in maintaining the balance of the earth’s environment, providing essential services like clean air and water, pollination of plants, and decomposition of waste.

The health and stability of ecosystems are vital for the survival of all living organisms, including humans.

Types of Ecosystem

Ecosystems are broadly categorized into two types: terrestrial and aquatic.

Terrestrial ecosystems, which are land-based, include forests, grasslands, deserts, and mountain regions. Each of these has distinct climates, geographies, and types of organisms.

Aquatic ecosystems are water-based and are divided into freshwater (lakes, rivers, and ponds) and marine (oceans and seas). These ecosystems vary greatly in their salinity, depth, area, and marine life. The different types of ecosystems are home to unique species and have specific roles in the environment. Understanding these diverse ecosystems is important for studying environmental science and for efforts in conservation and sustainable management.

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