Bob works as a software tester . he often has to take screenshots of applications that run incorrectly . which key on the keyboard will him take screenshots ?
answer press (ctrl ) and the square with the 2 lines onside them

Need asap write a short paper describing the history and differences between six sigma, waterfall, agile, and scrum models. understanding these models can give you a good idea of how diverse and interesting it development projects can be. describe what the rationale for them is and describe their key features. describe the history behind their development. at least 400 words