The answer is "<span>11; 6; 5".</span>
<span>In the year 1936, Whittlesey Derwent who was professor
of Geography and also one of the prominent political geographers. He recognized
eleven basic agricultural regions along with a zone where agriculture was not
found. These eleven are further distributed among five which are essential in
developing countries and other six which are essential in developed countries. </span>
Answer: A cataract.
Explanation: Cataracts cloud the eyesight!
