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. Sunlight, nutrients, and water are key factors for photosynthesis in plants (main primary - producers) and thus limit primary productivity. Time is not a direct limiting factor in the sense that it doesn't directly impact the biological and chemical processes involved in primary production like the other factors do.

Answer:

B. time