[ad_1] Confirm the identity of the first animals The first complex organisms appeared during the Ediacarian period, about 600 million years ago. The taxonomic affiliation of many of these organizations has been …
Read More »[ad_1] Confirm the identity of the first animals The first complex organisms appeared during the Ediacarian period, about 600 million years ago. The taxonomic affiliation of many of these organizations has been …
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