The thermocline layer is the _______ layer of the ocean.

Correct option is C

The correct answer is (c) second.
· The thermocline is the second layer of the ocean, situated below the surface layer (epipelagic zone) and above the deep layer.
· It is characterized by a rapid decrease in temperature with increasing depth. In the thermocline, the temperature drops more quickly than in the other layers, creating a distinct thermal gradient.
· This layer plays a crucial role in ocean circulation and heat distribution.
Additional Information:
The ocean is divided into several layers based on temperature, light penetration, and depth:
1. Surface Layer (Epipelagic Zone): The topmost layer, where sunlight reaches, allowing photosynthesis. It is warmer due to direct exposure to sunlight.
2. Thermocline (Mesopelagic Zone): This layer lies below the surface layer and acts as a transition zone with a sharp temperature gradient. Temperature drops significantly with depth in this region.
3. Deep Layer (Bathypelagic and Abyssopelagic Zones): Below the thermocline, temperatures stabilize at lower levels, and this region remains dark and cold.