In a Marine Environment, What Governs the Rate of Primary

Question

In a marine environment, what governs the rate of primary productivity?
A) available marine animals
B) available marine plants
C) available kelp
D) the depth of water

Accepted Answer

The rate of primary productivity in a marine environment is significantly influenced by the depth of water, as light penetration decreases with depth, limiting photosynthesis in phytoplankton and other photosynthetic organisms.