The author thanks Allah for giving them the strength and ability to complete their report. They also express gratitude to their advisors Dr. Johar, Prof. Dr. Amir zada Asad, Dr. Basharat, Sir syed Faiq shah, Sir Shakel, and Madam Sumera for their guidance and help. The author further thanks Dr. (head office), Sher Naeem, and Fida Muhammad for their assistance. They appreciate their field work fellows Zar Ali, Mahnoor, and Muhammad Ibrahim for helping collect information. The author concludes by thanking their parents, especially their mother, for her prayers and for providing the opportunity for education.