Multiple Choice
Which of the following is not true regarding the deep-scattering layer (DSL) ?
A) Position rises at night and moves down during the day
B) Comprise of fish,shrimp,squids and jellyfish
C) Found at depths of 300-500 meters
D) Discovered by sonar during WW II
E) Position is deeper on nights with a new moon
Correct Answer:

Verified
Correct Answer:
Verified
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