This interactive scatter plot visualizes the Iris dataset, with points colored by species (setosa, versicolor, virginica) and sized by sepal dimensions. It cycles through different variable pairings on the x-axis every few seconds using `setInterval`, while the y-axis remains fixed. The visualization is built with D3 v6, using `scaleLinear` for axes, `csv` for data loading, and SVG circles for marks. A legend distinguishes species colors, and axis labels update dynamically to reflect the current x-variable being displayed.