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Science glossary film: Biomass

Biomass

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The total mass of living organisms in an area or ecosystem.

The total mass of living organisms in an area or ecosystem. A biomass pyramid shows the biomass at each level of a food chain, which typically decreases at each level. The species with the biggest biomass on Earth is thought to be the Antarctic krill, at about 500 million tonnes - five times the total biomass of humans.

A biomass pyramid shows the biomass at each level of a food chain, which typically decreases at each level. The species with the biggest biomass on Earth is thought to be the Antarctic krill, at about 500 million tonnes - five times the total biomass of humans.

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