This interactive scatter plot displays the Iris dataset, cycling through four different feature pairings on the x-axis—petal width, sepal width, petal length, and sepal length—while keeping sepal length on the y-axis. Each species (setosa, versicolor, virginica) is color-coded with red, green, or blue markers. Built with D3 v6, the visualization uses a reusable `scatterPlot` module with `scaleLinear`, `axisLeft`, and `axisBottom` to render axes, while a `setInterval` loop updates the x-value mapping every few seconds. The JSON data is loaded via `d3.csv` and drawn as SVG circles with animated transitions.