What is difference between rabi and kharif crops

not copied from google

Rabi crops are typically known as a winter crop because it starts to grow in the winter season, and Means Khalif crops are typically grown in the rainy season.

Geologists use  seismic waves to  locate an earthquake's epicenter.. 

The investiture controversy began as a power struggle between pope gregory vii (1072–85) and henry iv, holy roman emperor (1056–1106).[2] a brief but significant struggle over investiture also occurred between henry i of england and pope paschal ii in the years 1103 to 1107, and the issue played a minor role in the struggles between church and state in france, as well.by undercutting the imperial power established by the salian emperors, the controversy led to nearly 50 years of civil war in germany, and the triumph of the great dukes and abbots. imperial power was finally re-established under the hohenstaufen dynasty. historian norman cantor: