Tourism plays a big role in the preservation of the planet. However, there are cases where tourists are slowly causing permanent harm to national parks and their inhabitants. There are rules to follow when visiting these parks so as to protect them and the wildlife endemic to these. While tourists are encouraged to have a fun time in the parks, there are guidelines to prevent accidents and to maintain order in national parks. Read more: https://sites.google.com/site/pdfinancialadvisor02/Alleviating-Parkinsons-With-Exercise/atouristsguidetoplanetarypreservation