This animated scatter plot visualizes the Iris dataset, cycling through four flower measurements as the x-axis every two seconds while the y-axis remains fixed on sepal length. Built with D3.js v6, it uses reusable chart patterns via `scatterPlot()`, `scaleLinear`, `axisLeft`, and `axisBottom` to render SVG circles and axes. The animation, driven by `setInterval`, updates the x-value accessor and re-renders the chart, showing how petal width, sepal width, petal length, and sepal length distribute against sepal length. Data loads from a remote CSV using `d3.csv`.