A scatter plot of the Iris dataset shows sepal length on the x-axis versus petal length on the y-axis, with each of the three species distinguished by color. The visualization uses D3 v7 with SVG rendering, employing `d3.scaleLinear` for axes, `d3.scaleOrdinal` with `d3.schemeCategory10` for species colors, and `d3.axisBottom`/`d3.axisLeft` for tick marks. Data is loaded asynchronously from a local CSV via `d3.csv`, and circles represent individual observations across 150 flowers.