Here is the resource pack for noun clauses. You can use either handout which suits your lesson. The materials are written in the theme of nature and environment, which also has vocabulary worksheet that can be used as a warm-up before the exercises.
Photocopiables.com is created by Volkan Tırpancı. He’s been an English teacher for more than 15 years. He’s been writing EFL resources since his first year in teaching English. He has CELTA from Cambridge University, which is the certificate of teaching English to Adults, and also has another certificate on teaching English from Istanbul University in Turkey. He has given general English lessons in several universities and to different age groups. He’s married and father of two cute little girls.