• TRANSPORT BY AIR
    COMMERCE

    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 transport has contributed greatly to commercial activities…

  • CARTILAGE
    BIOLOGY

    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 movement. It absorbs shock between bones. For…

  • WIND
    PHYSICAL GEOGRAPHY

    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. Wind ranges from simple, light and comfort…

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