“…Second dimension of those studies aims to investigate the environmental degradation indicators through co-integration and causality tests (Yang and Zhao, 2014;Omisakin, 2009;Bloch et al, 2012;Chang, 2010;Salahuddin and Gow, 2014;Azevedo et al, 2018). Last dimension of those studies in economic literature merges the first two by including several other economic actors into the analysis of validity of EKC hypothesis in addition to energy consumption which is accepted as the key contributor of CO 2 emissions to overcome the omitted variable bias either through case studies concentrating on one country (Seker et al, 2015;Tang and Tan, 2015;Maji and Habibullaha, 2015;Soytas et al, 2007;Chang, 2010;Ozturk and Acaravci, 2010;Yavuz, 2014) or by focusing on different countries having certain common characteristics (Gorus and Aslan, 2019;Zaidi et al, 2017;Shahbaz et al, 2015;Antonakakis et al, 2017;Rafindadi et al, 2018;Kim, 2019;Mert and Ça glar, 2019;Antonakakis et al, 2017;Heidari et al, 2015;Sadiq et al, 2023). The economic indicators included in econometric models to analyse the nexus depends on the characteristics of the country under consideration.…”