The zone where most biological productivity of the ocean occurs is called:

Question

Quizplus · Accepted Answer

The euphotic zone is the uppermost layer of the ocean where sunlight can penetrate, allowing for photosynthesis to occur. This is where the majority of the ocean's biological productivity happens, as phytoplankton use sunlight and nutrients to produce organic matter, supporting the ocean food web. The aphotic zone is the layer below the euphotic zone, where photosynthesis cannot occur due to lack of sunlight, and therefore has much lower levels of productivity. The hyperphotic and disphotic zones are not commonly used terms in oceanography.

The Zone Where Most Biological Productivity of the Ocean Occurs