A bar chart displays the average weight of 20 animal species, with each horizontal bar colored by its value using a linear scale mapped to the `schemeCategory10` color scheme. The visualization is implemented in React, loading CSV data from a gist, sorting it by weight, and rendering bars with D3 v6 scales (`scaleBand`, `scaleLinear`). The x-axis shows average weight in kilograms, and the y-axis lists animal names. The chart uses SVG elements and a color gradient to encode the weight values.