TRANSPORT BY AIR
Transport by air is the system of moving goods and passengers through the air by aeroplanes, helicopters etc. Air transport is very fast and comfortable but it is expensive. Air Continue Reading
CARTILAGE
A cartilage is a tough elastic and semitransparent tissue devoid of blood vessels and nerves. Functions of cartilage It prevents friction between two bones and allows smooth and free Continue Reading
WIND
Wind is defined as air in motion and it has speed and direction. In other words, wind is the horizontal flow or movement of air masses on the earth’s surface. Continue Reading