Answer:
b. decreases
Explanation:
As the depth of the ocean increases the population of ocean creatures decreases.
At special depths organisms must be better adapted to withstand the adverse and extreme conditions of this zone.
- At depths oxygen dissolve in water is rarer.
- The pressure is very great due to the column of water above
- For organisms to thrive in these zones, they must have special adaptability that would prevent them from being destroyed in this environment.
- Therefore, organisms are rarer in this zone.
