????? ??? ???? ???? ???? ?? ???????? ???? ??? ???? ??? ???? ???? ???? ???? ??????? ???? ??????? ???? ?????? ?????.One more environmental influence of airplanes is noise pollution, generally caused by plane using off and landing. See also??????????? ????? ????? ??? ??????? ?????????? ??????? ???? ???? ???? ??? ??????? ??? ??? ? ???? ??? ???? ????? ?