Consider the following statements regarding Submarine Canyons: They ar...
Explanation:
Submarine canyons are deep, steep-sided valleys that cut into the continental slope. They are formed by a combination of erosional and depositional processes. Let's analyze each statement individually:
Statement 1: They are absent near the mouth of rivers due to sediment deposition.
This statement is incorrect. Submarine canyons are often found near the mouths of rivers. Rivers carry a large amount of sediment from the land, and when they reach the ocean, they deposit some of this sediment near the coast. However, the strong currents and waves in the ocean can erode the deposited sediment, creating submarine canyons. These canyons act as conduits for transporting sediment from the shallow coastal areas to the deeper ocean basins.
Statement 2: Absence of submarine canyons is a unique feature of the Bay of Bengal.
This statement is also incorrect. The Bay of Bengal does have submarine canyons. In fact, the Bay of Bengal is home to several large submarine canyons, such as the Ganges Canyon and the Mahanadi Canyon. These canyons have been formed by the erosive action of the Ganges and Mahanadi rivers, respectively.
Therefore, neither of the given statements is correct. Submarine canyons are not absent near the mouth of rivers, and their absence is not a unique feature of the Bay of Bengal.