Five apples appear as red circles in a bowl, then update through a sequence of removals and a type change to lemon. Using D3.js and its `selection.data` method with key functions, the example demonstrates the general update pattern: entering elements animate from radius zero, updating circles transition to new x-positions and colors, and exiting circles shrink away. SVG animations via `transition.duration` (1000ms) run automatically through `setTimeout` calls.