Arshad and Mehdi Crossword challenge

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Across
  1. 2. the intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.
  2. 3. load (something, especially a gun that has been fired) again.
  3. 6. is a unit prefix meaning "one billionth"
  4. 10. a type of computer memory that can be accessed randomly;
  5. 12. the recording, reproducing, or broadcasting of moving visual images
  6. 13. copy (data) from one computer system to another, typically over the Internet.
  7. 15. a group of binary digits or bits (usually eight) operated on as a unit
  8. 16. an electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program
  9. 19. have a particular belief or idea.
  10. 20. able to move quickly and easily.
  11. 21. most famouse agile framework for developing
Down
  1. 1. the administration of an organization
  2. 4. facts and statistics collected together for reference or analysis.
  3. 5. a collection of instructions that can be executed by a computer to perform a specific task
  4. 7. scheduling system for lean manufacturing and just-in-time manufacturing
  5. 8. is a finite sequence of well-defined
  6. 9. an individual or collaborative enterprise that is carefully planned to achieve a particular aim
  7. 11. a global computer network providing a variety of information and communication facilities, consisting of interconnected networks using standardized communication protocols.
  8. 14. scripting language that is especially suited to web development
  9. 17. a person responsible for controlling or administering an organization or group of staff
  10. 18. forming an essential foundation or starting point; fundamental