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On early television stations, what typically filled the screen from around 11pm until 6am? test dummies test patterns tests testing colors

Which of these is a benefit of using objects in a powerpoint presentation? a. collaborators can create the external files while you create and edit the slide show. b. you can easily change the theme and design of the presentation. c. you can have older data in the source file while having up-to-date data in the presentation. d. collaborators can easily share the presentation.

How can smart devices benefit businesses, organizations, and social communities in the global marketplace?