Fill in the blanks:
……….refers to the variety in life existing on earth.

Fill in the blanks: The two regions of the earth with extreme climatic conditions are_________and __________.

Fill in the blanks with one of the two verbs given in the brackets : Politics ……a vital role in village life. (play/plays)

Fill In the blanks: The energy stored in an object when it is lifted above the surface of earth is called ___

The part of Earth in which life exists is known as:

Fill in the Blanks. Atmosphere of the primitive earth was highly ….. While that of present earth is highly …

Fill in the blanks : The major reservoir of carbon on Earth is .............