I agree with the writer that tourism has a destructive impact on the environment. For tourism, there will be an increase number of people, especially visitors, in using different kinds of transportation. When there is more transportation used, more greenhouse gases are emitted. Cars emit greenhouse gases such as carbon dioxide and carbon monoxide. Cars also produce other harmful air pollutants which contribute to poor air quality such as smog. The passage also stated carbon emissions and air pollution also significantly increase, as more air and land-based vehicles are needed to transport tourists from one destination to another. There is also example in Singapore that show that tourism causes air pollution. For example, with a target of 17 million visitors coming to Singapore in 2015, there is a high chance of more air pollution from all the carbon emissions from planes and land transport. Thus, I think that tourism is destroying the environment by causing air pollution, even in a society like Singapore. Therefore, I agree with the writer that tourism brings detrimental effects to the environment.