Environment Chapter Notes
Introduction
- New chapter: Environment
- Things related to geography from the sixth class
- Will understand through Ravi's story
- Environment: Everything around us
Definition of Environment
- Everything we see around us is the environment
- Includes both natural and human-made objects
Types of Environment
- Natural Environment: Trees, animals, water, mountains
- Human-made Environment: Buildings, roads, objects
Importance of Environment
- Life support system
- Essential resources: air, water, food, land
Components of the Chapter
- Biotic: Related to living organisms
- Abiotic: Related to non-living elements
Natural Environment
- Lithosphere: Earth's solid layer
- Hydrosphere: Water part
- Atmosphere: Layer of the atmosphere
Biosphere
- Place that makes life possible
- Combination of lithosphere, hydrosphere, atmosphere
Ecosystem
- Interrelation among living organisms
- Transfer of energy and materials
Human Environment
- Modification of the environment by humans
- Lifestyle of early and modern humans
Key Points
- June 5: World Environment Day
- Origin of the word 'environment': 'environer' meaning neighborhood
Barter System
Thus, this chapter is important for understanding different aspects of the environment.