Why do some people put salt on sidewalks when it snows?

Are special combinations of keys that tell a computer to perform a command. keypads multi-keys combinations shortcuts

Which network media uses different regions of the electromagnetic spectrum to transmit signals through air? uses different regions of the electromagnetic spectrum to transmit signals through air.

Which of the following types of software is most applicable to the promotion of new products through advertising? a. databases b. spreadsheets c. web design programs d. word processing tools