Explanation: The Himalayas are a vast and complex mountain range that spans several countries, including India, Nepal, Bhutan, and parts of China. They are divided into three main parallel ranges: the Outer Himalayas, the Middle Himalayas, and the Inner Himalayas. Each of these ranges has distinct characteristics and altitude ranges.
The Outer Himalayas, also known as the Siwalik Range, are the lowest of the three ranges. They are characterized by relatively low, rolling hills and are composed of sedimentary rocks. The altitude of the Outer Himalayas ranges from approximately 350 meters to 1500 meters. This range is important for understanding the geographical and geological structure of the Himalayas, as it forms the outermost boundary of the mountain system.
The Middle Himalayas, also known as the Lesser Himalayas, are the central range and are composed of more resistant rocks such as limestone and sandstone. They have a higher altitude range, typically between 1500 meters and 5000 meters. This range includes well-known mountain ranges such as the Pir Panjal and Dhauladhar ranges.
The Inner Himalayas, also known as the Great Himalayas, are the highest and most rugged range. They are composed of the oldest and hardest rocks and include the highest peaks in the world, such as Mount Everest. The altitude range of the Inner Himalayas is above 5000 meters, with many peaks exceeding 8000 meters.
Understanding the altitude ranges of the different Himalayan ranges is crucial for comprehending the geographical and geological features of the region. The Outer Himalayas, with their altitude range of 350-1500 meters, play a significant role in the overall structure and ecological diversity of the Himalayan region. They are important for agriculture, habitation, and the formation of river valleys, which are vital for the livelihoods of millions of people in the region.
In summary, the correct altitude range for the Outer Himalayas is 350-1500 meters, which is consistent with the geographical and geological characteristics of this range. This range is distinct from the Middle and Inner Himalayas, which have higher altitude ranges and different geological compositions. Understanding these distinctions is essential for a comprehensive understanding of the Himalayan region and its geographical features.