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Evolution - Lesson 15 - Part 1of 8

Host; Dr. David Pearson. Part 1 Evolution -- 15-Part1 •State of the oceans and atmosphere analysing old rocks •Three kinds of rocks to tell us about the early oceans and atmosphere •Banded iron formation Temagami, Ontario -- shows oxygen content from the bedding of red material. •Uranium ore -- sedimentary conglomerate Elliot lake, Ontario no oxygen in the ore at time of deposition •Red sandstone •Taking samples of gas from a volcano •Algae formation of past and today

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