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The zone where salinity increases sharply with depth is the:
AThermocline
BShelf break
CDeep plain
DHalocline
Answer & Solution
Correct answer: D. Halocline
1. Lower salinity water rests above denser water.
2. The sharp increase zone is the halocline.
3. Higher salinity raises density.
_Source: NCERT Class 11 Fundamentals of Physical Geography, Chapter 13, Water (Oceans)._
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