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There are three main components of the environment – Lithosphere, Atmosphere and Hydrosphere.
- The solid portion of the Earth on which we live is called the Lithosphere.
- The gaseous layer that surrounds the Earth is the Atmosphere.
- The area covered by water is called Hydrosphere.
- The zone which contains all forms of life is called Biosphere.
The earth is the only planet where human beings find three life sustaining elements—land, water and air. The surface of the earth is a complex zone. Here three main components of the environment—lithosphere, atmosphere and hydrosphere meet, overlap and interact.
There are four major oceans—the Pacific Ocean, the Atlantic Ocean, the Indian Ocean and the Arctic Ocean in order of their size.
Oxygen is essential for our life. We can not live without it. Nitrogen is essential for the growth of living organisms. Carbon dioxide absorbs heat radiated by the earth and in this way it keeps the earth warm. It is also essential for plants.
Increase in the amount of CO2 leads to an increase in global temperatures which is known as global warming.
Lithosphere: The solid portion of the earth on which we live is termed as the lithosphere.
Atmosphere: The gaseous layers that surround the earth is known as the atmosphere.
Hydrosphere: The water bodies on the earth’s surface is known as hydrosphere.
Biosphere: It is the narrow zone where land, water and air together are found. All forms of life exists here.
Continents: The large landmasses are called continents.
Ocean basins: The huge water bodies are called the ocean basins.
Strait: It is a narrow passage of water connecting two large water bodies like seas and oceans.
Isthmus: It is a narrow strip of land joining two landmasses.
Plant Kingdom: The part of biosphere consisting of plants and trees.
Animal Kingdom: The part of biosphere consisting of an animal.
Global warming: Increase in the amount of carbon dioxide leads to an increase in the global temperatures. This is known as global warming.