I've dug two graves for us, my dear Can't pretend that I was perfect, leaving you in fear
Oh man, what a world, the things I hear
If I could act on my revenge, then, oh, would I?

Why is it essential to operationally define the variables in a study?

When your organs don't receive enough blood, they begin to a. shut down b. speed up c. inflame d. dry out

Which of the following ideas would not lead to lower amounts of waste? a) the extension of a product’s lifetime b) the elimination of unnecessary packaging c) flexible construction for simple repair d) built-in obsolescence e) the introduction of new design technology