This bubble plot visualizes the Iris dataset, displaying sepal length on the x-axis and petal length on the y-axis. Each circle's radius encodes petal width, while its color distinguishes the three iris species (setosa, versicolor, virginica) via a categorical color scheme. Built with D3.js v6, the SVG visualization uses `d3.scaleLinear` for axes, `d3.scaleSqrt` for bubble sizing, and `d3.scaleOrdinal` with `d3.schemeSet1` for species coloring. Data is loaded asynchronously from a CSV file using `d3.csv`, with axes rendered via `d3.axisBottom` and `d3.axisLeft`.