COMPONENTS OF ENVIRONMENT

COMPONENTS OF ENVIRONMENT

• Atmosphere Blanket of gases surrounding the earth.

• Hydrosphere- Various water bodies present on the earth.

Lithosphere Contains various types of soils and rocks on the earth.

Biosphere- Composed of all living organisms and their interactions with the environment.

Atmosphere

•The atmosphere forms a protective shell over the earth.

• The lowest layer, the troposphere, the only part warm enough for us to survive in, is only 12 kilometers thick.

The stratosphere is 50 kilometers thick and contains a layer of sulphates which is important for the formation of rain.

. It also contains a layer of ozone, which bsorbs ultra-violet light

HYDROSPHERE

• The hydrosphere covers three quarters of the earth's surface.

• A major part of the hydrosphere is the . marine ecosystem in the ocean, while only a small part occurs in fresh water.

Fresh water in rivers, lakes and glaciers, is perpetually being renewed by a process of evaporation and rainfall.

. Some of this fresh water lies in underground aquifers.

Human activities such as deforestation Create serious changes in the hydrosphere.

LITHOSPHERE

The crust of the earth is 6 or 7 kilometers thick and lies under the continents.

• Rocks, when broken down. form soil on which man is dependent for his agriculture. Their minerals are also the raw material used in various industries