Class - 7 - Social Science - Our Environment - CBSE
Geography - Chapter 1 Our Environment
Ravi was sad when he saw that the playground near his school was gone. A big building was going to be built there. He shared his feelings with his classmates and teacher. This made him think about what the environment is.
What is Environment?
The environment is everything around us. It includes:
1. Natural things – Like trees, rivers, animals, mountains, air, and land.
2. Human-made things – Like buildings, roads, bridges, cars, and parks.
3. Human activities – Like farming, industries, education, and politics.
How Humans Change the Environment
Human beings need food, water, shelter, and many other things. To fulfill their needs, they cut down trees, build houses, make factories, and use vehicles. This changes the natural environment. Sometimes, it harms nature and creates problems like pollution.
Natural Environment
The natural environment includes land, water, air, plants, and animals. It is made up of four main parts:
1. Lithosphere – The hard surface of the earth, including mountains, valleys, and plains. It gives us soil, minerals, and space to live.
2. Hydrosphere – All water bodies like rivers, lakes, and oceans. Water is important for all living beings.
3. Atmosphere – The air around the earth. It protects us from harmful sun rays and helps in weather changes.
4. Biosphere – The part of the earth where life exists. It includes all plants, animals, and humans.
What is an Ecosystem?
An ecosystem is a place where living things (plants, animals, and humans) live together and depend on each other. For example, in a pond, fish, plants, and insects live together. They need water, sunlight, and food to survive. If one part is harmed, the whole ecosystem gets disturbed.
Human Environment
In the past, people lived close to nature. They hunted animals and collected food. Slowly, they learned farming, built houses, and started living in villages and cities. Over time, they invented the wheel, started trading, and created industries. Today, we have advanced technology and fast transportation, but human activities have also harmed nature.
Why We Should Protect Our Environment
Our environment gives us everything we need – air, water, food, and shelter. But due to pollution, deforestation, and overuse of natural resources, the environment is getting damaged. If we don’t take care of it, we will face big problems in the future.
How Can We Help?
1. Save Trees – Trees give us oxygen and clean air. We should plant more trees.
2. Save Water – Water is precious. We should not waste it.
3. Use Less Plastic – Plastic harms the environment. We should use eco-friendly materials.
4. Reduce Pollution – We should use bicycles or public transport to reduce air pollution.
5. Recycle and Reuse – We should recycle paper, plastic, and other materials to save resources.
~~The END~~
Chapter 1 Our Environment
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