Attention: as your teacher will explain you, this year you will have to do this kind on practice weekly. The videos for 1st BAC will appear on Tuesday, so you should complete the tasks before next one appears.
Today, about one-tenth of the world’s population are southpaws. Why are such a small proportion of people left-handed ... and why does the trait exist in the first place?
Daniel M. Abrams investigates how the uneven ratio of lefties and righties gives insight into a balance between competitive and cooperative pressures on human evolution.
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