Vocabulary revision
https://langeek.co/en/vocab/subcategory/948/word-list
https://www.ihvalladolid.com/wp-content/uploads/2018/03/C1-Vocabulary-Reading-Pollution.pdf
Listening
https://www.oxfordonlineenglish.com/a-talk-about-climate-change-listening-lesson-c1-c2
https://www.elllo.org/english/1301/T1302-amy-change-climate.htm
Reading