- Environment is the basic life support system that helps us live.
- The nature, place, people, things, etc. that surround the living organisms make the environment.
- It has three components: Natural, human and human-made.
- It is a combination of both natural as well as man-made phenomena.
- Natural environment comprises biotic and abiotic conditions, whereas the man-made phenomena comprises the activities and interactions among human beings.
- Biotic conditions refer to the living organisms and abiotic conditions refer to the non-living elements.
• Natural Environment:
(i) Lang, water, air, plants and animals comprise the natural environment.
(ii) Lithosphere, atmosphere, hydrosphere and biosphere are the four domains of the natural environment.
(iii) Lithosphere is the solid crust or the hard top layer of the earth. It is made up of rocks and minerals and has a thin layer of soil on top. It contains landforms like mountains, plateaus, plains and valleys.
(iv) Hydrosphere is the domain of water. It comprises water bodies like rivers, lakes, seas, oceans, etc. It is essential for life.
(v) The atmosphere is the thin layer of earth that surrounds the earth. It protects us from the harmful rays and scorching heat of the sun. The gravitational force of the earth holds the atmosphere around it. The changes in the atmosphere create the weather and climate.
(vi) Biosphere is a narrow zone of the earth where land, water and air interact with each other to support life. Both the Plant and Animal Kingdoms make up the biosphere.
• What is Ecosystem?
(i) The relation between the living organisms and the relation between the organisms and their surroundings form the ecosystem. The ecosystem is the biological community of interacting organisms and their physical environment.
(ii) There could be an ecosystem of a large rain-forest, grassland, desert, mountains, lake, river, ocean and even a small pond.
• Human Environment:
(i) Human beings interact with the environment and modify it according to their needs.
(ii) Early humans adapted themselves to their natural surroundings. They learned to invent the wheel, grow crops, domesticate animals, hunt and gather food.
(iii) With time, trade and commerce flourished and the barter system emerged.
(iv) Industrial revolution, transportation and information revolution and information made communication easier and speedy across the world.
(v) Humans need to maintain a perfect balance between natural environment and themselves. Humans must learn to live and use their environment in a harmonious way.
For More :-
CBSE
Class–VII | CHAPTER – 1 Integers | NMMS
Revision Notes à Click
Here
Tracing
Changes Through a Thousand Years | NMMS Revision Notes | Class 7 | Social à Click
Here
New
Kings and Kingdoms | NMMS Revision Notes | Class 7 | Social à Click Here
The
Delhi Sultanate | NMMS Revision Notes | Class 7 Social à Click
Here
The
Mughal Empire | NMMS Revision Notes | Class 7 Social à Click Here
Tribes
Nomads and Settled Communities | NMMS Revision Notes | Class 7 Social à Click
Here
Devotional
Paths to the Divine | NMMS Revision Notes | Class 7 Social à Click
Here
The
Making of Regional Cultures | NMMS Revision Notes | Class 7 Social à Click
Here
Eighteenth
Century Political Formations | NMMS Revision Notes | Class 7 Social à Click
Here
Environment
| NMMS Revision Notes | Class 7 Social à Click
Here
Inside
Our Earth | NMMS Revision Notes | Class 7 Social à Click Here
Our
Changing Earth | NMMS Revision Notes | Class 7 Social à Click Here
Air |
NMMS Revision Notes | Class 7 Social à Click Here
Water
| NMMS Revision Notes | Class 7 Social à Click Here
Human
Environment Interactions the Tropical | NMMS Revison Notes | Class 7 Social à Click
Here
Life
in the Deserts | NMMS Revision Notes | Class 7 Social à Click Here
On
Equality | NMMS Revision Notes | Class 7 Social à Click Here
How
the State Government Works | NMMS Revision Notes | Class 7 Social à Click
Here
Role
of the Government in Health | NMMS Revision Notes | Class 7 Social à Click
Here
Growing
up as Boys and Girls | NMMS Revision Notes | Class 7 Social à Click
Here
Women
Change the World | NMMS Revision Notes | Class 7 Social à Click Here
Understanding
Media | NMMS Revision Notes | Class 7 Social à Click Here
Markets
Around Us | NMMS Revision Notes | Class 7 Social à Click Here
A
Shirt in the Market | NMMS Revision Notes | Class 7 Social à Click Here
Nutrition
in Plants | NMMS Revision Notes | Class 7 Science à Click Here
Nutrition
in Animals | NMMS Revision Notes | Class 7 Science à Click Here
Heat |
NMMS Revision Notes | Class 7 Science à Click
Here
Acids
Bases And Salts | NMMS Revision Notes | Class 7 Science à Click Here
Physical
And Chemical Changes | NMMS Revision Notes | Class 7 Science à Click
Here
Respiration
In Organisms | NMMS Revision Notes | Class 7 Science à Click Here
Transportation
in Animals and Plants | NMMS Revision Notes | Class 7 Science à Click
Here
Force
and Pressure | NMMS Quick Revision Notes
| Class: 8 Physics à
Click Here
Reproduction
In Plants | NMMS Revision Notes | Class 7 Science à Click Here
Motion
And Time | NMMS Revision Notes | Class 7 Science à Click Here
Electric
Current and its Effects | NMMS Revision Notes | Class 7 Science à Click
Here
Light
| NMMS Revision Notes | Class 7 Science à Click Here
Waste
Water Story | NMMS Revision Notes | Class 7 Science à Click Here
How
When and Where | NMMS Revision Notes | Class 8 Social à Click
Here
From
Trade to Territory | NMMS Revision Notes | Class 8 Social à Click Here
Ruling
the Countryside | NMMS Revision Notes | Class 8 Social à Click Here
Tribals
Dikus and Vision of Golden Age | NMMS Revision Notes | Class 8 Social à Click
Here
When
People Rebel | NMMS Revision Notes | Class 8 Social à Click Here
Weavers
Iron Smelters and Factory Owners | NMMS Revision Notes | Class 8 Social à Click
Here
Civilising
the Native Educating the Nation | NMMS Revision Notes | Class 8 Social à Click
Here
Women
Caste and Reform | NMMS Revision Notes | Class 8 Social à Click Here