when sound from a loudspeaker collides with the walls of a room part of the sound's energy is reflected, part is transmitted, and part is absorbed into the walls. the bodies of all 143 people aboard the aircraft were recovered. put another way, it is the type representing the "difference" between the two. the voice replied, “a few yards towards north of this place dig the land and you will get water”. however, he is not as welcome as he expected. it the greatest service to open the history to the people. some had initiated company-wide and formally approved environmental projects. 