Question

our knowledge regarding the oceanic trenches is limited​

Answer 1

Our knowledge regarding the oceanic trenches is limited because of following reasons:-

* As ocean trenches are the steep depressions situated in the deepest part of the ocean.

* These trench exceeds upto 6000 meters which makes it the world's 'hadal zone', which makes it very much difficult to collect information from these treches.

* Most of the trenches are located in Pacific Ocean and world's deepest trench i.e- Mariana trench is also situated in Pacific Ocean only.

Answer 2

1) At places, deep, narrow and steeply sloping depressions are found in the ocean floor. These are called ocean deeps or ocean trenches.

2) The oceanic trenches are the deepest parts of the oceans.

3) These trenches can be thousands of metres deep.

4) The knowledge of ocean trenches is limited because of their depth and their remoteness