unıt7

4. a formal written request, typically one signed by many people, appealing to authority in respect of a particular cause.
7. the complete loss or absence of hope
9. knowledge or perception of a situation or fact.
11. each of several buttons on a panel for operating a computer, typewriter, or telephone.
12. the information about a particular person that exists on the internet as a result of their online activity.

1. give (money or goods) for a good cause, for example to a charity.
2. a number of things, typically of the same kind, growing or fastened together
3. denoting or relating to networks in which each computer can act as a server for the others, allowing shared access to files and peripherals without the need for a central server.
5. especially of information, measurements, or predictions) correct in all details; exact.
6. a length or portion of time.
8. the fact of being who or what a person or thing is.
10. matter, material, articles, or activities of a specified or indeterminate kind that are being referred to, indicated, or implied.