What do you understand by the term ‘Hydrosphere’?

Question

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Answer

Hydrosphere on the earth refers to the water domain in all the states: solid, liquid and gaseous.
It includes the water present in rivers, lakes, oceans, ice caps and glaciers, etc.
It extends several kilometres below and above the earth’s surface.
Ninety-seven per cent of water is present in the ocean, whereas rest three per cent is fresh water which is present in the form of ice caps on the mountain tops, as glaciers in the Polar Regions and lakes in underground reservoirs.

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	Column I		Column II
(a)	Two surgeons were sitting down to lunch when one of them made a call on the mobile phone.	(1)	Suffers from chronic asthma
(b)	The boy who won the drawing competition went to the dias.	(2)	To become an astronaut which she did
(c)	One of the fastest athletes in the world.	(3)	To speak with her daughter who had just returned from school
(d)	She was not that well-off but had a dream.	(4)	On a wheelchair to collect his prize