III. Give Reasons
1. Himalayas are called young fold moutains
Himalayas have been formed only a few million years ago and they were formed because of the folding of the earth crust due to tectonic activity.
2. North Indian Rivers are perennial
The North Indian rivers originate from the Himalayas. They receive water from the melting of snow from the peaks of the Himalayas and also from the monsoons.
3. South Indian rivers are east flowing.
Most of the South Indian rivers originate from the Western Ghats. Moreover the topography of South India slopes towards east. So the South Indian rivers are east flowing.
4. West flowing rivers do not form deltas
The Western Coastal plain is narrow. And it is flooded during high tides, So the west flowing rivers do not form deltas.