This animated scatterplot cycles through different Iris flower measurements—petal width, sepal width, petal length, and sepal length—on the x-axis while plotting sepal length on the y-axis. Using D3.js v6, it loads the Iris dataset via `d3.csv`, renders circles colored by species, and updates axes through a `setInterval` loop. The code builds a reusable scatter plot component with `d3.scaleLinear`, `axisBottom`, and `axisLeft`, and includes a custom legend, title, and axis labels, all rendered as SVG with CSS styling.