Why do Babies Cry after Taking Birth?

Baby will be for 9 months inside the Mother womb, if we observe Baby will start crying gently after taken out from mother womb, reason behind baby crying is that baby feels that mother heartbeat is the protection inside the mother womb after baby takes out from mother womb baby could not able to hear the mother heartbeat. After mother taking baby in to her hands within second’s baby stops crying because baby able to hear mother heartbeat and sync with mother heartbeat.