Brandon2000 Brandon2000

28-01-2015
Biology

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What role did the ozone play in the evolution of life on earth

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hidenseekcx hidenseekcx

28-01-2015

It allowed organisms with DNA to live on/ near Earth's surface.

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nathanielwunder nathanielwunder

28-01-2015

IT BLOCKED HARMFUL SUN Solar flars and energy so orginisms could grow and evolve

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