major domains of the earth

Define

          Meteors-

         Isothermal-

Debris-

Name the different layers of atmosphere.

• the troposphere

• the stratosphere

• the mesosphere

• the thermosphere

• the exosphere

Write about the features of stratosphere.

•   It extends up to 50 km above the planet’s surface.

• The temperature in this layer increases with the height.

• This zone has high ozone concentration.

Explain the term ‘biosphere’. What is its significance?

         (a)     is the lowest layer of the atmosphere.

       (a)      is the highest layer of the atmosphere.

      (a)       is dense near the earth’s surface.

         (a)   refers to the regions of the earth in which life exists.