Redigerer Liv (avsnitt)

== Referanser ==
<references>
<ref name="AP-20151019">{{cite news |last=Borenstein |first=Seth |title=Hints of life on what was thought to be desolate early Earth |url=http://apnews.excite.com/article/20151019/us-sci--earliest_life-a400435d0d.html |date=19. oktober 2015 |work=[[Excite]] |location=Yonkers, NY |publisher=[[Mindspark Interactive Network]] |agency=[[Associated Press]] |accessdate=2015-10-20}}</ref>

<ref name="croswell">{{cite book | last = Croswell | first = Ken | title = Alchemy of the Heavens | publisher = Anchor |date=februar 1996 | url = http://kencroswell.com/alchemy.html| isbn = 0-385-47214-5}}</ref>

<ref name="Hallingbäck">Hallingbäck, T., et al: ''Nationalnyckeln till Sveriges flora och fauna, Bladmossor'', Artsdatabanken, SLU Uppsala, 2006</ref>

<ref name="Mora">[http://www.plosbiology.org/article/info%3Adoi%2F10.1371%2Fjournal.pbio.1001127 Mora C, Tittensor DP, Adl S, Simpson AGB, Worm B (2011) ''How Many Species Are There on Earth and in the Ocean?'' PLoS Biol 9(8): e1001127. doi:10.1371/journal.pbio.1001127]</ref>

<ref name="Nature">[http://www-binf.bio.uu.nl/pdf/Ciccarelli.s06-311.pdf ''Nature''] - Francesca D. Ciccarelli, Tobias Doerks, Christian von Mering, Christopher J. Creevey, Berend Snel, Peer Bork. (2006) ''Toward Automatic Reconstruction of a Highly Resolved Tree of Life'', Nature, No 311.</ref>

<ref name="Aas (2017)">Espen Aas (2017) [https://www.nrk.no/urix/livet-pa-jorden-kan-ha-startet-300-millioner-ar-tidligere-1.13403034 – Vi har funnet verdens eldste form for liv]. ''Urix'' (web), [[NRK]], 1. mars 2017. Besøkt 2017-03-01</ref>
</references>