Atmospheric Pressure decreases with altitude that is why:-
1) It is difficult to cook on the motion.
2) The fountain pen of a passenger leaks in aeroplane.
3) Bleeding occurs from the nose.
4) It is difficult to breath on higher altitude due to less amount partial pressure of oxygen in air.
5) Water starts to boil below 100°C .
-Answered by Himanshi Verma On 23 March 2019:05:50:05 PM