The document discusses the four spheres that make up Earth's environment: the atmosphere, climate, hydrosphere, and ecosystem. The atmosphere sustains life and is composed primarily of nitrogen, oxygen, and inert gases. The climate determines temperature, humidity, and atmospheric conditions. The hydrosphere covers 70% of the planet as ocean water and 3% as freshwater. An ecosystem consists of all living and non-living interactions within a specific area. The environment is important as it provides resources for shelter, medicines, crop pollination, soil protection, air/water purification, and climate regulation.

1. ENVIRONMENT
SCOPE & IMPORTANCE

2. WHAT IS ENVIRONMENT
?

3. THE FOUR SPHERES

4. ATMOSPHERE
 Sustains Ecosystem
78% Nitrogen
21% Oxygen
1% Argon & other inert gases
Air contains water vapour & water droplets
seen as CLOUDS

5. CLIMATE
Temperature
Humidity
Atmospheric pressure
Wind
Rainfall
Other Meteorological Elements

6. HYDROSPHERE
 It is the liquid component of Earth
 It covers 70% of Earth’s surface
 97% is ocean water
 Only 3% is fresh water

7. ECOSYSTEM
An ecosystem is a natural unit consisting of all
plants, animals and micro-organisms (biotic
factors) in an area functioning together with all
of the non-living physical (abiotic) factors of the
environment.

10. POPULATION
EXPLOSION

11. Rising CO2
Level

12. Polar Sea Ice
Loss

13. Destruction Of
Rain Forest

14. IMPORTANCE
Biodiversity provides problem-solving raw
materials for shelter and useful products.
Provides medicines
 Allows us to pollinate and maintain healthy
crops
 Forests prevent soil erosion, landslides, and
flooding
Maintain the purity of the air and water
Temper climatic fluctuations