Von Bismarck Posted February 18, 2014 #1 Share Posted February 18, 2014 One of science's strongest dogmas is that complex life on Earth could only evolve when oxygen levels in the atmosphere rose to close to modern levels. But now studies of a small sea sponge fished out of a Danish fjord shows that complex life does not need high levels of oxygen in order to live and grow. Read more at: http://phys.org/news/2014-02-theory-animals-earliest-animal-life.html#jCp Link to comment Share on other sites More sharing options...
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