In class today, we were asked to make three visualisations from a set of data, which were death rates from ambient particulate air pollution; it showed trends in emissions from 1990 to 2017. One of them had to be a choropleth, a map that uses differences in shading, colouring, or the placing of symbols to indicate the average values of a particular quantity in those areas. The data presented a global-level overview of air pollution.

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