Transform the word in brackets so that it fits the text lexically and grammatically. Write the answer in capitals without gaps.

Ecotourism is getting more and more popular. It offers two things at once: __________ and entertainment. Most people agree that ecotourism is the most ___________ branch of tourism. It makes profit without destroying _______________ resources. When tourists choose eco trips, they stay in local houses with local people, not in _____________ hotels. They travel on foot, by boat, bicycle or elephant to avoid pollution. However, such trips are not at all cheap. This is ____________ 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 ________ \(VISIT\) and be as careful as possible.