There is a significant importance of promoting sports competition which brings national pride and unity among people of a nation, for example if a country organize a competition like football, olympic, cricket, chess competition that brings excitement in a nation. Organizing a competition brings economic benefits of hosting major events like fifa, icc, olympic, etc. such as it creates jobs, and helping sustainable tourism sector. Arranging sports competitions requre a good sports environment like make venues, for this reason one country needs places to build sports venue and economic resources to construct and maintain its construction. For example, in Qutar fifa world cup, Qutar requires to build new soccer fields to arrange fifa world cup and for this reason, their budget was 5 billion dollars to arrange this fifa world cup 2022. If one host nation arrange a large-scale events there is raising a question of pollution, which is the main concerned of this kind of event. Because ther...