(i) The above graph shows the land under cultivation in India in units of million hectares. The graph shows that the land under cultivation in India was 120 million hectares in 1950 which rose to 140 million hectares in 1970 and remained constant at 140 million hectares till 2000.
(ii) Yes, it is important to increase the land area under irrigation firstly so that the farmers can do multiple cropping and grow more than one crop in a year and increase their production and earning. Secondly, use of HYV seeds need of plenty of water to give best results.
(iii)