write about the divisions and importance of Himalayas?
Answers
Answer:
The Central / Nepal Himalayas
This division stretches from the Kali River to the Tista River. The major part of it lies in Nepal except for the extreme eastern part- Sikkim Himalayas. The important peaks are the Mt. Everest, Kanchenjunga, Makalu, Dhaula Giri, Annapurna, Manaslu, and Gosainath.
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Importance of himalayas
1)Himalayas give rise to the most important rivers in India like ganga , yamuna , Brahmaputra because of which most of the states in north India gets water for whole year
2)it blocks the cold winds that blow towards India and thus helps to keep our country warm
3)it also acts helps us in defense as the enemies cannot attack us directly because of the terrain of the Himalayas .
The physical features of India can be grouped under the following physiographic divisions
PHYSICAL FEATURES OF INDIA
(1) The Himalayan Mountains: The Himalayas, geologically young and structurally fold mountains stretch over the northern borders of India. These mountain ranges run in a west-east direction from the Indus to the Brahmaputra. The Himalayas represent the loftiest and one of the most rugged mountain barriers of the world.
(2) The Northern Plains:The northern plain has been formed by the interplay of the three major river systems, namely — the Indus, the Ganga and the Brahmaputra along with their tributaries.The plain being about 2400 km long and 240 to 320 km broad, is a densely populated physiographic division. With a rich soil cover combined with adequate water supply and favourable climate it is agriculturally a productive part of India.
(3) The Peninsular Plateau:The Peninsular plateau is a tableland composed of the old crystalline, igneous and metamorphic rocks. It was formed due to the breaking and drifting of the Gondwana land and thus, making it a part of the oldest landmass.
(4) The Indian Desert:The Indian desert lies towards the western margins of the Aravali Hills. It is an undulating sandy plain covered with sand dunes. This region receives very low rainfall below 150 mm per year. It has arid climate with low vegetation cover. Streams appear during the rainy season. Soon after they disappear into the sand as they do not have enough water to reach the sea. Luni is the only large river in this region.
(5) The Coastal Plains:The Peninsular plateau is flanked by stretch of narrow coastal strips, running along the Arabian Sea on the west and the Bay of Bengal on the east. The western coast, sandwiched between the Western Ghats and the Arabian Sea, is a narrow plain. It consists of three sections. The northern part of the coast is called the Konkan (Mumbai – Goa), the central stretch is called the Kannad Plain, while the southern stretch is referred to as the Malabar coast.
(6) The Islands: the country has two groups of islands.Lakshadweep Islands group lying close to the Malabar coast of Kerala. This group of islands is composed of small coral isalnds. Earlier they were known as Laccadive, Minicoy and Amindive. In 1973, these were named as Lakshadweep. It covers small area of 32 sq km. Kavaratti island is the administrative headquarters of Lakshadweep.
Andaman and Nicobar islands - They are bigger in size and are more numerous and scattered. The entire group of islands is divided into two broad categories – The Andaman in the north and the Nicobar in the south. It is believed that these islands are an elevated portion of submarine mountains.
Explanation: