Mazen Ahmed Afif, is a substitute teacher at Maklan School in the Shuaib area, Al-Dalea G. He also works as an independent researcher and he is currently writing in Authorea (https://www.authorea.com/users/65781-mazen-afif ) and his articles have appeared in figshare (https://figshare.com/authors/Mazen_A_Afif_Afif/3341705), and on ORCID at (https://orcid.org/0000-0001-5343-1806) to find him on: Twitter: @mazen_afif LinkedIn: Https://www.linkedin.com/in/mazenahmedafifnasser Facebook : https://m.facebook.com/mazen.afif.39 Google+: http://profiles.google.com/110836205748404455607 You can reach him at E-mail: mazenafif80@gmail.com