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Around 90 per cent of people
are right-handed. Scientists have spent
trying to find out why. Researchers from Oxford University in the UK believe they have a
answer. Their research suggests that the answer is because of two
of human
. The first is walking on two legs, and the other is the large
of the human brain. When humans first started walking on two
, their hands were
to do things. Our large brain worked out many things to do with our hands like using
. If most people used the same hand, using tools and working with others became easier. This became useful for things like
and cooking.
