Ecotourism is getting more and more popular. It offers two things at once: ___EDUCATION___ and entertainment. Most people agree that ecotourism is the most ___HARMLESS___ branch of tourism. It makes profit without destroying ___NATURAL___ resources. When tourists choose eco trips, they stay in local houses with local people, not in ___EXPENSIVE___ hotels. They travel on foot, by boat, bicycle or elephant to avoid pollution. However, such trips are not at all cheap. This is ___PROBABLY___ the only disadvantage. But you can apply the principles of ecotourism every time you go on a normal holiday. You should remember that you’re only a ___VISITOR___ and be as careful as possible.