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Answer:

1) Ganga of the South

Cauvery: The Cauvery is also known as the Dakshin Ganga or the Ganga of the South. The Kaveri (also known as the Cauvery) is a river in India that flows through Karnataka and Tamil Nadu.

2) southern part of Eastern Coastal Plains

→Coromandal coast

The Eastern Coastal Plains is a wide stretch of the landmass lying between the Eastern Ghats and the Bay of Bengal. In the northern part, it is referred to as the Northern Circar, while the southern part is known as the Coromandel Coast.

3) a scenic longitudinal valley in the Shiwalik

→longitudinal valleys between the lesser himalayas and shiwaliks are known as 'duns' in the west and 'duars' in the east.

4) North - eastern extension of the Himalayas

→The Himalayas, or Himalaya, are a mountain range in Asia separating the plains of the Indian subcontinent from the Tibetan Plateau. The range has some of the planet's highest peaks, including the highest, Mount Everest. Over 100 peaks exceeding 7,200 m in elevation lie in the Himalayas.

5) the Ganga - Brahmaputra Delta

→The Ganges Brahmaputra Delta, also named Ganges Delta, Sunderban Delta or Bengal Delta is situated in Asia where the Ganges and Brahmaputra rivers discharge into the Bay of Bengal. It is, with a surface area of some 100.000 km2, the world's largest Delta.

1. River Kaveri

2. Coromandel Coast

3. Duns

4. Purvanchal Mountains

5. Ganges Delta, Sunderban Delta or Bengal Delta

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