Multiple choice

The open sea can be divided into which of the following vertical zones?

  1. abyssal

  2. euphotic

  3. coastal

  4. A and B

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The vertical zones of the ocean are typically categorized by light penetration and depth, including the euphotic, bathyal, and abyssal zones. Since both abyssal and euphotic are vertical zones, option D is the correct choice.