Mention the significance of Northern Plains​

Extremely fertile and good for crops,  rivers are navigable throughout the year,  flat land- good for roads and railways,  irrigational facilities, and for construction of H.E.P. Plants.

Explanation:

Northern Plains have fertile soil which is needed to grow crops. They are drained by rivers Ganga, Brahmaputra, Indus. To feed the country, Northern Plains are necessary.  

true. earthquakes are felt whenever there is a slip around a fault in the rocks below the earth. this reorientation of faults create sesmic waves and is known as earthquake, the severity of which is measured in richter scale. these are more prominent in hilly regions as the rocks usually form faults to balance the pressures on it.