Question

primary productivity is not limited by ________. a. the availability of sunlight b. time c. the availability of nutrients d. access to water please select the best answer from the choices provided

Explanation:

Primary productivity is the rate at which energy is converted by photosynthetic and chemosynthetic autotrophs to organic substances. It is limited by factors like sunlight for photosynthesis, nutrients for growth, and water as a key reactant. Time is not a direct limiting - factor in the sense that it doesn't directly impact the biological and chemical processes involved in primary productivity like the other factors do.

Answer:

B. time