Mass tourism is not a key trend in sustainable tourism, as it can lead to environmental degradation and social and cultural problems.

Ecotourism is a form of responsible tourism that focuses on preserving the environment and benefiting local communities.

All of the above are examples of sustainable tourism practices that can help to reduce the environmental and social impacts of tourism.

Sustainability assessment is a comprehensive process that evaluates the environmental, social, and economic impacts of tourism.

All of the above are examples of technological innovations that can be used to promote sustainable tourism.

Sustainable tourism management is the practice of designing and operating tourism businesses in a way that minimizes environmental impacts and maximizes social and economic benefits.

All of the above are examples of policies that can be used to promote sustainable tourism.

All of the above are terms for the practice of involving local communities in the planning and management of tourism.

Costa Rica, Bhutan, and New Zealand are all examples of sustainable tourism destinations that have implemented policies and practices to protect the environment and benefit local communities.

Voluntourism is the practice of traveling to destinations that are experiencing environmental or social problems in order to help address those problems.

Green Globe, EarthCheck, and LEED are all examples of sustainable tourism certifications that recognize businesses and destinations that are committed to sustainable practices.

Peace tourism is the practice of using tourism to promote peace and understanding between different cultures.

The Great Barrier Reef Marine Park, the Galapagos Islands National Park, and the Machu Picchu Historical Sanctuary are all examples of sustainable tourism initiatives that have been implemented to protect these iconic destinations.

Alternative tourism, niche tourism, and off-the-beaten-path tourism are all terms for the practice of traveling to destinations that are off the beaten path and have not been heavily impacted by tourism.

Solar-powered boats, electric vehicles, and smart grids are all examples of sustainable tourism technologies that can help to reduce the environmental impacts of tourism.