This scatter plot visualizes the Iris dataset, showing petal length against petal width for three flower species. The D3.js v7 code uses `d3.csv` to load the data and renders each flower as a semi-transparent SVG circle, with an ordinal color scale distinguishing species. Linear scales (`d3.scaleLinear`) map data values to pixel positions, while `d3.axisBottom` and `d3.axisLeft` add labeled axes.