In the ocean as a whole, the limiting factor for primary productivity is:

Question

Quizplus · Accepted Answer

Light availability is the primary limiting factor for primary productivity in the ocean. This is because photosynthetic organisms, such as phytoplankton, require sunlight to carry out photosynthesis and convert carbon dioxide into organic compounds. However, light penetration in the ocean decreases with depth, limiting photosynthesis to the surface layer or areas with high levels of nutrients where mixing occurs. Therefore, light availability controls the distribution and abundance of photosynthetic organisms in the ocean.

In the Ocean as a Whole, the Limiting Factor for Primary