1. Start from the etymology of pollution, observing the image from the dictionary.

2. Then the class is divided in 3 groups, and read the passages by Martialis, Seneca and Svetonius.

Martialis, Epigrammata, 9, 68

Seneca, ad Lucilium, 56

Svetonio, Vespasiano, 23

3. Look at the source below to understand how Romans polluted.

https://ralphhaussler.weebly.com/sustainability.html

4. Which kind of pollution they are talking about? 

Make an infographic