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[[File:Archae.png|right|300px|thumb|A picture of several [[bacteria]] in the [[Archaea]] [[domain]].]][[Archaea]] is a [[domain]] of primitive [[bacteria]] that are considered likely to have been the first living [[organism]]s on the [[Earth]]s. ===About Archaea===: [[Archaea]] are a [[domain]] in the [[Three Domain System|three domain system]]. ===References=======AQA====:[https://www.amazon.co.uk/gp/product/1782946381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946381&linkCode=as2&tag=nrjc-21&linkId=5ec5fc3f6429e30c1d9ab9bca2bccf93 ''Archaea (three domain system), page 249, GCSE Combined Science Trilogy; Biology, CGP, AQA']:[https://www.amazon.co.uk/gp/product/1782945954/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945954&linkCode=as2&tag=nrjc-21&linkId=100574c08fbbb64318256eb79ed61a76 ''Archaea (three-domain system), page 309, GCSE Biology, CGP, AQA']:[https://www.amazon.co.uk/gp/product/1782945563/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945563&linkCode=as2&tag=nrjc-21&linkId=9a1d023a374038e6072f33c4f3cf808b ''Archaea, page 104, GCSE Biology; The Revision Guide, CGP, AQA']:[https://www.amazon.co.uk/gp/product/0198359373/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359373&linkCode=as2&tag=nrjc-21&linkId=952a73bbb09d222ecc4b50d200679849 ''Archaea, page 252, GCSE Biology; Third Edition, Oxford University Press, AQA']:[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe09692 ''Archaea, page 80, GCSE Combined Science; The Revision Guide, CGP, AQA']:[https://www.amazon.co.uk/gp/product/0008158754/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158754&linkCode=as2&tag=nrjc-21&linkId=27ad53b0283feeff7fc5ae04a9e205f51 ''Archaea, pages 22-3, 282, GCSE Biology; Student Book, Collins, AQA']====Edexcel====:[https://www.amazon.co.uk/gp/product/1782948120/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948120&linkCode=as2&tag=nrjc-21&linkId=dedef775c6a43dbb0a609441525adac0 ''Archaea (domain), page 137, GCSE Biology, CGP, Edexcel '']