Answers

2015-09-05T19:46:41+05:30
We can not hear sound on moon because in moon there is no air so sound can not travel in the surface of the moon.
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We cant here voice on moon because of absense of air.birds chirp because the can feel the smaller waves produced by earthquake
2015-09-05T19:48:01+05:30
No we can't hear sound on moon because there is no medium but only vacuum. 
birds chirp before the occurrence of an earthquake because they are God gifted they can identify the earthquake.
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