{"version":"1.0","type":"rich","title":"activity9-2","description":"This stacked area chart visualizes sea turtle population trends from 1900 onward across three categories—Green, Loggerhead, and Hawksbill—using time-series data loaded via `d3.csv`. The visualization uses `d3.stack()` to layer the series and `d3.area()` with `curveBasis` for smooth paths, while `d3.scaleTime` and `d3.scaleLinear` map years and counts. Axes employ `d3.axisBottom` and `d3.axisLeft`, with `d3.timeFormat('%Y')` for year labels and `d3-scale-chromatic` for color encoding. Tooltips appear on hover via appended `<title>` elements, and the chart resizes dynamically with the window.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/3c18ae11e81948ee830fa17f31c3e6be?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}