The land biomass is increasing from the poles to the equator. The largest biomass of living land matter is concentrated in tropical forests, which are the most productive communities of the mainland biosphere. The oceans occupy more than 2/3 of the planet’s surface. The biomass in it is distributed unevenly and is represented mainly in the upper part by plankton. The oceans are considered the most productive environment for the creation of biomass. This is due to the intensive reproduction rates of microscopic representatives of phyto- and zooplankton, their rapid growth and short life span. Therefore, the total volume of primary annual production formed by producers of the oceans is comparable with the volume of production of land plants.
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