Which ecosystem has highest gross primary productivity?

Estuaries are the most productive ecosystems in the world followed by swamps and marshes . Intermixing of river and sea water create conditions habitable for large variety of flora and fauna. read more

Compared with temperate forests, these values are approximately 2.5 times higher for net productivity and 4 times higher for gross productivity, the difference being that the respiration rate at the tropical site was 5 times that of temperate forests. read more

A) It contains greater concentrations of nutrients. B) It receives a greater amount of solar energy per unit area. C) It has the greatest total area. read more