Question

in an aquatic ecosystem, the algae and phytoplankton are responsible for primary productivity. All BUT ONE factor usually influences the primary productivity of a marine ecosystem. That is a)water salinity b)light intensity c)water temperature d)available nutrients

Answer 1

C
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Answer 2

Answer: Light intensity

Step-by-step explanation:

The total amount of nutrient( organic material) which is left after respiration, in order to support the other levels of the food chain is known as the net primary productivity.

More than 90% of the producers are the pytoplanktons that performs the process of photosynthesis.

The intensity of light falling on the water surface affects the rate of primary productivity.