This interactive scatter plot visualizes the Iris dataset, cycling through different feature pairings on the x-axis while keeping petal width on the y-axis. Colored circles represent three species (setosa, versicolor, virginica), with a legend and axis labels updating automatically. Built with D3 v6, it uses reusable chart modules (`scatterPlot`) and D3 selections to render SVG elements, with `setInterval` driving the animation loop. The code employs scale functions and axes from D3's scale and axis modules.