Turbulence in the ocean primarily drives which process?

• A. Light penetration
• B. Photosynthetic rate decrease
• C. Vertical mixing of nutrients
• D. Salinity stability

Answer: (C)

Turbulence creates chaotic mixing that breaks down the ocean’s layered structure and moves water between depths. This vertical stirring brings nutrient-rich water from below into the sunlit surface layer where phytoplankton live, supplying the nutrients they need for growth. Light penetration depends mainly on water clarity and particles, not on turbulence, and salinity stability is controlled by freshwater input and evaporation, not the mixing itself. So the most direct consequence of turbulence in the ocean is the vertical mixing of nutrients.