{"version":"1.0","type":"rich","title":"Question 3","description":"A scatter plot displays the relationship between PM10 and NO2 air pollution levels, with each point shaped according to the country name using D3’s `scaleOrdinal` and `symbolsFill` generators. The visualization renders in an SVG via `d3.scaleLinear` for axes, with a custom legend built from `symbol` shapes. Data is fetched from a GitHub-hosted CSV and parsed with `d3.csvParse`. The code relies on reusable modules for axes and legend rendering, demonstrating modular D3 v7 chart composition.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/9c73354350b143db9d590a6e36e0c75d?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}