This D3.js scatter plot visualizes the Iris Dataset, plotting petal length on the x-axis and petal width on the y-axis. Data points are color-coded by species: pink for setosa, green for versicolor, and blue for virginica. The visualization encodes each flower’s sepal length and width as the `rx` and `ry` attributes of the circles, adding an additional dimension to the plot. Built with vanilla HTML, it uses `d3.csv` to load the data, `d3.scaleLinear`, `d3.extent`, and `d3.axisLeft`/`d3.axisBottom` for scales and axes, and appends SVG circles to render the marks.