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Question : What are the physical changes that resulted in the upright posture in the course of evolution of human?

Answer»

SOLUTION :(i) Developed STRONGER and straighter legs with feet suited more for walking.
(ii) They STARTED using their hands for grasping and for various purposes.
(iii) The pelvic girdle changed into a broad basin like STRUCTURE to support the trunk.
(iv) Changes in the pelvic girdle and associated MUSCLES.


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