Green revolution : Dr. M. S. swaminathan and Dr. normn borlaug : : White revolution ………….. .

Explanation

(i) Various methods applied for harvesting maximum yield from minimum land are collectively called as green revolution.
(ii) At the beginning of the 20th century all the underdeveloped and developing countries had been badly affected by the effects of poor quality and quantity of food. it was one of the problem of population explosion .
(iii) Improvised dwarf varieties of wheat and rice, proper use of fertilizers , pesticides and water management has led to the increased production of food grains and thereby large population had been saved from hunger.
(iv) Dr. Norman Borlaug (USA) and Dr. M.S. Swaminathan (India) have made valuable contribution in green revolution .