This area chart visualizes the relationship between petal width and sepal length from the Iris dataset. The visualization uses D3's `scaleLinear`, `axisBottom`, `axisLeft`, and `area` APIs to render a filled area path with light blue coloring. The data is loaded from a remote CSV file containing iris flower measurements, and the chart is displayed with labeled axes within an SVG canvas. The chart computes its scales from the extent of the data and includes configurable width, height, and axis labels through a reusable chart factory function.