This animated scatter plot visualizes the Iris flower dataset, cycling through four feature combinations on the x-axis (petal width, sepal width, petal length, sepal length) while keeping sepal length on the y-axis. Points are colored by species (setosa, versicolor, virginica) with a legend and dynamic axis labels. Built with D3 v6, it uses `d3.csv` for data loading, `scaleLinear` for scales, and `setInterval` to animate axis changes. A reusable `scatterPlot` module handles the SVG rendering, with custom circles and text annotations.