Extinctions: Past and Present Week 1 - From simple to complex

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Abstract
In this video, Professor Anusaya Chinsamy-Turan uses several examples to explain how life on Earth has evolved over billions of years from simple unicellular organisms to the complex multicellular lifeforms that we see today. She makes the point that there is clear evidence of the evolution and diversification of organisms by looking at fossils from different time periods from all over the world.
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