The Sundarban Delta
Explanation
A river delta is a landform created by the deposition of sediment that is carried by a river as the flow leaves its mouth and enters slower-moving or stagnant water. The Sundarban Delta is the result of the confluence of the Ganga, Brahmaputra, and Meghna river systems.
Detailed Analysis:
- Formation and Size: The Sundarban Delta is the largest delta in the world. It extends across India (West Bengal) and Bangladesh. It is formed by the massive sediment load deposited by the Ganga and Brahmaputra rivers as they merge into the Bay of Bengal.
- Growth Rate: It is considered one of the fastest-growing deltas globally due to the continuous accumulation of silt and alluvium brought down by the Himalayan river systems.
- Biodiversity: The region is home to the world's largest contiguous mangrove forest. It is the specific habitat of the Royal Bengal Tiger. The name "Sundarban" is derived from the Sundari tree (Heritiera fomes), which is abundant in this region.
- Comparison with Other Options:
- The Mahanadi, Godavari, and Krishna deltas are significant deltas located along the Eastern Coastal Plains of India. While they are agriculturally productive and ecologically important, they are significantly smaller than the Sundarban Delta and do not hold the distinction of being the world's largest.
Key Takeaway:
The Sundarban Delta is the world's largest and fastest-growing delta, formed by the Ganga-Brahmaputra-Meghna system, and is the natural habitat of the Royal Bengal Tiger.