The last thirty years have seen a huge rise in mass tourism, and this has inevitably led toenvironmental degeadation in all areas. Landre sources such as minerals and fertile soil have beenseriously depleted in order to supply the tourist industry with building materials and food.Deforestation of wooded areas and the restructuring of beaches to build resorts have led to soil erosion, while wildlife has suffered as many animals' natural habitats have been destroyed. Cars, aircraft, hotels,restaurants and resorts, etc, cause pollution by burning fossil fuels , and this has led to a depletion of the ozone layer,acid rain, which damages trees and buildings, and a steady rise in globel warming . At the same time, dumped rubbish and other waste pollutes soil and water tables,or is burnt to create even more air pollution. What were once areas of natural beauty or historical sitesare now little more than overcrowded rubbish tips, while towns and cities groan under the weight ofthousands of visitors.