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Title: Stromatolites are (Multiple Choice Question) Post by: adreamer on Sep 9, 2017 Stromatolites are
A) fossils of the first organisms to introduce oxygen into the atmosphere B) fossils of the first multicellular organisms C) layers of sediment that once contained colonies of ancient microbes D) fossils of the first eukaryotes Title: Re: Stromatolites are (Multiple Choice Question) Post by: 19Clyde on Sep 9, 2017 Content hidden
Title: Re: Stromatolites are (Multiple Choice Question) Post by: adreamer on Dec 30, 2017 Awesome :)
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