Five fruit circles animate in and out of an SVG bowl using the D3.js general update pattern. The example demonstrates enter, update, and exit selections with `selectAll`, `data`, and `.merge`, styling apples red and lemons yellow via `scaleOrdinal`. Fruits are removed, replaced, or deleted over time in `index.js` using a random `id` key, while `transition().duration(1000)` animates radius and position changes through the shared `fruitBowl` function.