{"version":"1.0","type":"rich","title":"activity7_task4","description":"This bubble chart compares GDP per capita with life expectancy for countries worldwide, where each circle’s size reflects population and its color denotes continent. Hovering over a bubble reveals a tooltip with the country name, while focusing on a continent dims all other bubbles to highlight that group. The visualization uses d3.v4 with SVG rendering, d3-scale-chromatic for color schemes, and interactive CSS transitions for hover effects. Data is loaded from a remote CSV file, and scales are defined using d3.scaleLinear and d3.scaleSqrt.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/cc3fd79bb5d34d408fa11233d1c12de5?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}