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Day visitors: Visitors who arrive and leave the same day,
irrespective of why they are travelling

Decision-making unit (DMU): The combination of

inputs to a purchasing decision

Degradation: Any decline in the quality of natural or
cultural resources, or the viability of ecosystems, that is
caused directly or indirectly by humans.

deluxe tour: in travel usage, presumably of the highest
standard

Demographic Profile: Characteristics used in research
such as age, gender, occupation, income, marital status,
place of residence, etc.

departure tax: fee collected from the traveler by the host
country at the time of departure

Dependency theory: This theory maintains that

developing countries are kept in a position of dependency
and underdevelopment due to existing economic and
institutional power structures sustained by leading
Western nations. Dependency theorists argue that the
policies and activities of multinational corporations,

national bilateral and multinational aid agencies such as
the World Bank and the International Monetary Fund
(IMF) tend to widen the gap between rich and poor
countries and perpetuate the dependency of developing
nations.

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