Lists of organisms by population

[13] The total number of related DNA base pairs on Earth is estimated at 5.0 x 1037 and weighs 50 billion tonnes.

[15] In July 2016, scientists reported identifying a set of 355 genes from the Last universal common ancestor (LUCA) of all organisms living on Earth.

[16] The domain of eukaryotes represent a small minority of the number of organisms;[17] however, due to their generally much larger size, their collective global biomass is estimated to be about equal to that of prokaryotes.

[29] With an estimated 20 quadrillion ants their biomass comes to 12 megatons of dry carbon, which is more than all wild birds and non-human mammals combined.

[35] Extrapolations from data compiled over a period of 10 years suggest that greater Amazonia, which includes the Amazon Basin and the Guiana Shield, harbors around 390 billion individual trees.