Do Geography and Altitude Shape the Sounds of a Language?

One example agreeing with this idea is:

In Swedish north, word for "yes" is pretty much shaped by what would be easiest sound to produce when one's lips are frozen:

http://www.youtube.com/watch?v=URgdIAz4QNg

Is then a language simply a combination of sounds which are the easiest to produce depending on the climate, altitude, terrain where we live?