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

Answer;

-Time

Primary productivity is not limited by time.

Explanation;

-Productivity is the increase in the amount of new living material produced (biomass) in an ecosystem. Primary productivity is the increase in plants in an ecosystem.This takes place mainly through photosynthesis.The Sun's energy is used by green plants(autotrophs) to make sugars out of water and carbon dioxide.

-The productivity of the primary producers is especially important in any ecosystem because these organisms bring energy to other living organisms by photoautotrophy or chemoautotrophy.

1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.