Question

which open-ocean zone order shows decreasing temperature?
deep zone, transition zone, surface zone
surface zone, transition zone, deep zone
transition zone, surface zone, deep zone
surface zone, deep zone, transition zone

Explanation:

In the open ocean, the surface zone is warmed by the sun, so it has the highest temperature. The transition zone is below the surface zone, and temperature decreases as depth increases here. The deep zone is the deepest, with the coldest temperature. So the order from highest to lowest (decreasing) temperature is surface zone, transition zone, deep zone.

Answer:

surface zone, transition zone, deep zone