The interactivity asks you to pair up the food items with the carbon emissions created by their production. The graphs showing the carbon emissions are fixed and you need to arrange the food type labels into the correct places.
Different types of food can have a range of possible emissions . This is because there are some conditions where producing the food has relatively low carbon emissions, and other conditions where the emissions are relatively high. For example, 250g of asparagus grown seasonally and locally has emissions of 270g CO2e, but 250g of asparagus airfreighted from Peru has emissions of 4.7 kg CO2e.
The graphs below show the low, average and high emission impacts of the different foods. When you think you have rearranged the cards correctly, pressing the submit button will show you which cards have been correctly placed. You can then rearrange the other cards and check again.
The data used in the task comes directly from the landmark Poore and Nemecek paper, Reducing food's environmental impacts (2018).