Write six changes which brought in green revolution

Dear student, 
It seems that you require the causes/objectives that led to green revolution. The following points may help you:


a. To improve the production in the agrarian sector.
b. To attain self sufficiency in terms food grains.
c. To meet the need of the growing population.
d. Improving the condition of the  farmers .
e. To increase contribution of agriculture sector to country's GDP.