Question

ramdas used to grow crops which type of agriculture was performed by ramdas

Answer 1

Lakshminarayanapuram Ananthakrishnan Ramdas (3 June 1900–1 January 1979) was an Indian physicist and meteorologist, known for discovering the atmospheric phenomenon of the Ramdas layer or Lifted Temperature Minimum where the lowest temperature in the atmosphere is not on the ground but a few tens of centimeters above the ground resulting. This can be seen in thin layer fogs which are at some height above the ground. He has been called the father of agricultural meteorology in India.
(I think this will help you)

Answer 2

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