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.
After watching the video test yourself about this topic,
you will find some practice on pronunciation too.
you will find some practice on pronunciation too.
No comments:
Post a Comment
I'll be grateful to know your ideas about this blog, but please be respectful with our work.
Any spam or publicity will be rejected.