Read and choose the right question.

E. If possible, consider means of transport other than the plane. Rapidly increasing numbers of flights have put the environment in danger. Planes pollute the air, which results in global warming. In fact, tourism is not harmless fun as many may think: new airports and tourist infrastructure, pollution and crowds of noisy tourists make wild animals migrate, which may decrease their population or even make them extinct.

• What nature-friendly ideas started a new branch in the tourism business?
• What means of transport is the most popular with tourists?
• Why can tourism be dangerous to nature?
• What are the reasons that make people go on a trip?
• What kind of tourism is getting popular with elderly people?
• Why does travelling make people smarter?
• What are the ways to save money while travelling?