Question

SHOW.
(b Porters place a large round piece of cloth on their heads when they
carry heavy loads.
A sharp knife cuts vegetables and fruits more effectively than a blunt
knife.
(d) School bags are provided with wide straps to carry them.
(e) It is much easier to burst an inflated balloon with a needle than
(directly) with the finger.
(f) Mountaineers may suffer from nose bleeding at high altitudes.
(g) Airplanes have pressurised cabins for passenger safety while flying high
in the atmosphere.
ROD A
ROD B
Two rods, 'A' and 'B', of the same weight and
equal length, have different thicknesses. A boy,
while playing with them on a beach, held them
vertically on the surface of sand as shown in the​

Answer 1

g.aeroplanes are pressurized because the air is very thin at the altitude they fly at this attitude humans can't breathe very well and our body gets less oxygen.