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Human blood cell source

Earth is beautiful. source

Amazing photograph source

source Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy including planets, stars, galaxies, and even light are brought toward one another. Gravity is the force by

source Hacking generally refers to unauthorized intrusion into a computer or a network. The person who do this activities is hacker . A computer hacker is any skilled computer expert that uses their technical

source What is a Operating system ? Operating system is a system software. Operating system manages computer hardware and software and resources. An operating system is a software that allows to run

( Command Prompt is a application available in most Windows operating systems. Command Prompt is officially called Windows Command Processor. Command prompt is windows a windows application. . Command