As you use digital communication, you should follow the rules of to protect yourself, your family, and your career. a. netiquette
b. interactivity
c. social media
d. privacy

A. Netiquette, netiquette is the way you should act on the web.

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.