What's Earth's dominant species by mass?

Automated excerpt

Cattle are easily the top domesticated animal species, with about 650 million metric tons of biomass. Animals as a whole have 2 billion tons of carbon. That means we handily outclass viruses (0. 2 billion tons) but are beaten by protists (4 billion), archaea (7 billion), fungi (12 billion), bacteria (70 billion) and especially plants (450 billion).

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