Biology Timeline
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Title: Biology Timeline

Essay Details:

Subject: Science
Author: Betty B
Date: August 25, 2016
Level: University
Grade: B
Length: 1 / 272

Essay text:

(Photosynthesis) ? (Remember?we are still under water) ? A few microorganisms "learn" to use the waste O2 of photosynthesis? ? Cells develop modes of locomotion 3.0 ? 5.0 Million years ago ? The waste of photosynthesis is oxygen. O2 escapes the ocean and begins to accumulate in the atmosphere, eventually forming the ozone. Ozone protects from solar radiation. Making the land/air habitable. 1.5 Billion years ago ? Cells begin sticking together to form multi-cellular clusters ? Invertebrate diversity explodes ? (We are still in water) 450 ? 375 Million years ago ? Various plants inhabit the land...

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