Question

व्हिच वाटर इस रिचेस्ट बाय रूफटॉप रेनवाटर हार्वेस्टिंग टेक्निक्स ​

Answer 1

The net availability of foodgrains divided by the population estimates for a particular year indicate per capita availability of foodgrains in terms of kg/year. Net availability, thus worked out further divided by the number of days in a year I.e., 365 day gives us net availaility of foodgrains in terms of grams/day.