Results
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| Property | Organism | Value | Units | ID | Details |
|---|---|---|---|---|---|
| Present global atmospheric oxygen level | Biosphere | 20.946 (±0.006) | volume % | 116086 | Duursma EK, Boisson MPRM... |
| Fraction of the four billion species estimated to have evolved on the Earth over the last 3.5 billion years that are extinct | Biosphere | ~99 | % | 112752 | Barnosky AD et al., Has... |
| Number of described species of beetles (Coleoptera, the most species-rich group of organisms on Earth) | Insect | ~360,000 | described species | 113121 | Bouchard P et al., F... |
| Oxygen (O2) and carbon dioxide (CO2) data for atmosphere and oceans | Biosphere | Table - link | N/A | 116089 | Duursma EK, Boisson MPRM... |
| Fration of lithosphere that is silicon | Biosphere | 27 | % | 114430 | Tréguer P et al., The... |
| Age of ancient fossilized evidence of life | Biosphere | isotopic metamorphosed sedimentary rocks 3,700-3,800: stromatolites 3,700: molecular clock >4,000 | Mya | 113264 | Nutman AP, Bennett VC... |
| Evolution of oxygenic photosynthesis by cyanobacteria | Biosphere | ~2.8 | Billion years ago | 114975 | Kihara S, Hartzler DA... |
| Fraction of the 1.9 million known recent species that are recorded as extinct | Biosphere | 0.04 ((799 species)) | % | 117269 | Régnier C et al., Mass... |
| Number of described species | Invertebrates | ~1.4 | million species | 117270 | Régnier C et al., Mass... |
| Fraction of insect species per taxonomic order that have contracting ranges in the UK | Biosphere | 30 - 60 | % of species per taxonomic order | 117267 | Ceballos G, Ehrlich PR... |
| Origin of mammals and dinosaurs | vertebrates | 210 - 230 | Mya | 113318 | Smith et al., Body size... |
| Wingspan of Meganeura spp., extinct flying insects ~3 times the size of the largest flying insects today | Insect | >65 - 71 | cm | 113319 | Smith et al., Body size... |
| Span of insect evolutionary history | Insect | 300 | million years | 113320 | Smith et al., Body size... |
| Thickness of shell beds (biogenic sediments) | Biosphere | paleozoic-a few centimeters to tens of centimeters: post-Paleozoic >1meter | N/A | 113321 | Smith et al., Body size... |
| Body size variation across domains of life | Various | Table - link | N/A | 113313 | Smith et al., Body size... |
| Increase in mass-specific energy demand from giraffe to animal the size of deer mouse | Mammals | ~20 | fold greater in deer mouse than in giraffe | 113314 | Smith et al., Body size... |
| Lower boundary of the viable size of newborns in aquatic environmets | Mammals | ~5 | kg | 113315 | Smith et al., Body size... |
| Origin of microscopic cyanobacteria-like organisms and their biovolume | Cyanobacteria | evolved by ∼3,500 - 3,400Mya: biovolume of ∼3.4×10^−6mm^3 | N/A | 113316 | Smith et al., Body size... |
| Size of large marine invertebrates | Invertebrates | sponge Xestospongia muta >7m^3: tube worm Riftia pachyptila >3m: jellyfish Nemopilema nomurai >3m | N/A | 113317 | Smith et al., Body size... |
| Density of sea water | Biosphere | ~1027 | kg/m^3 | 108511 | Windows to the universe... |