Q. Which of the following ecosystem has highest bio-mass?
Answer: Forest Ecosystem
Notes: Forest ecosystems, that cover roughly one third of the global land area and are among the most biologically rich and genetically diverse ecosystems on earth, have the highest biomass. Measurements show that tropical rain forests typically have biomass values on the order of 400 to 700 metric tons per hectare, greater than most temperate forests and substantially more than other vegetation with fewer or no trees.

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