Windows,linux, unix,DOS are examples of

Linux is an example of:

Linux is an example of_______

Windows 10 is in an example of a______.

What do you understand by metamorphosis ?Expkain with an example. Give one example of retrogressive metamorphosis.

What do you understand by symbiosis ? Explain with an example

(a). How do non-metals react with hydrogen? Explain with an example. (b). How do non-metals react with hydrogen ? Explain with an example.