{"version":"1.0","type":"rich","title":"Activity-6_Question-4","description":"This bubble chart visualizes the environmental impact of urban parks by plotting park area on the x-axis, annual visitors on the y-axis, and tree density as bubble size, with color encoding city. Each circle represents a park from the loaded CSV data, and hovering reveals the park name and air quality index via a tooltip. Built with D3 v7, the visualization uses d3.scaleLinear for axes and bubble radius, d3.scaleOrdinal with d3.interpolateTurbo for city colors, and includes legends for tree density and city categories.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/d6155b42815c48048d607a34541785a0?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}