Answer:
The independent variable (IV) is the depths at the Altantic Ocean and the dependent variable (DV) is the water temperatures.
Step-by-step explanation:
The IV is what is changed between the groups of the study.
The DV is what is being measured for the groups.
You can say that the DV depends on the IV because changes and differences in the DV depends on the changes for the IV.
I hope this helps! :)