What are 3 examples of a idler gear in real life?

Before you enter an intersection on a green light make sure

For her science class, elaine is creating a presentation on weather in the united states. she wants to make the presentation beautiful and interesting by drawing simple cloud or wave shapes. which is the best way for elaine to draw these shapes?

Joe needs to see the slide transitions and animations he has applied to his slides in a large view. which presentation view should he use? in which tab would joe find the animations option to make further changes, if any?