Question

How has the application of knowledge inproveg agriculture in the arid zones,dry lands and hilly regions of our country

Answer 1

by adding the scientific knowledge there is a great improvement in cultivation by knowing the fertilizers to add, improve soil fertility, types of vegetation to grow on perticular types of soilThe green revolution triggered this situation in India and gave a momentum in clearing out dry arid area. They use new seeds which are capable of growing in harsh condition even the wit of irrigation has been improved. This has in all affected the agriculture of India.
 
               
                  Hope this is useful.