David tapped a button in an app. What happens next? A: An event has occurred. will pass on the message to the view controller. It uses the keyword

2. fluorine and chlorine molecules are blamed fora trapping the sun's energyob forming acid rainoc producing smogod destroying ozone molecules

Take a critical look at three gui applications you have used—for example, a spreadsheet, a word-processing program, and a game. describe how well each conforms to the gui design guidelines listed in this chapter.

Which boolean operator enables you to exclude a search term? a} not b} and c} or d} plus