A scatterplot of the Iris dataset animates through combinations of its four features on the x-axis (petal width, sepal width, petal length, sepal length) against sepal length on the y-axis. Points are colored by species (setosa, versicolor, virginica). Built with D3 v6, it uses `scaleLinear`, `extent`, `axisLeft`, and `axisBottom` from a custom `scatterPlot` module, with an SVG render and `setInterval` for cycling axes.