The longest river in the world

Snowfall that is accompanied with rain is called:

Supply of water to farms is called :

Ground water is the____________source of water for man.

The store house of many resources like fish,minerals and energy is______.

Area that slopes down on drains to the main river is called:

Area that receive little rainfall face drought conditions in :

Large amount of _______________is buried in the ocean floor.

Heavy rainfall leads to :

The largest of all oceans: