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Bird flu (Avian influenza) is an infection caused by avian (bird) influenza (flu) viruses. These flying viruses occur naturally among birds. Wild birds carry these viruses....

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Human beings, always striving for the best, are in search of a relatively comfortable life. To achieve this, man has to manipulate his natural surroundings in an appropriate direction.

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Hard Disk a secondary storage device used to store data on computers, mobiles and laptops. Introduced by IBM in the year 1956, a hard disk is a non-volatile, random access data storage device.

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Atoms or molecules of a gas are far apart and move independently of each other. strong>Gas can be expanded or compressed to a much greater degree than liquid or solid. Changes in volume of a gas are

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>There are eight planets in the solar system, the Sun being at the center of the solar system and the planets revolving around the Sun. Up till now 67 satellites (Moons) of the planets have been discovered. The solar system also contains asteroids, meteors and visiting comets.

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