The cover of gases surrounding the earth is called the ------------------

The moving air is called -------------------

The loss of dissolved oxygen from water in water bodies is called -------------

All water-bodies on the earth such as, rivers, lakes, oceans etc., together form-------------

Light and heat energies from the sunlight are called ---------------------

Converting animal - dung into a more useful fuel called --------------

Flowing water possesses -------------- energy.

The process of carrying away the top soil by wind or by the flowing water is called -----------

Which one is harmful effect of Acid rain ?

The kinetic energy of the huge amount of water that moves along the waves is called ----------------- energy.