• Trang An may be affected by mass tourism. This kind of tourism can cause/lead to/result in environmental pollution and damage to the natural habitat.
• To preserve Trang An, it is necessary to limit the number of daily visitors / it is recommended that we promote eco-tourism / we should protect the local flora and fauna.

• Another problem might be young people’s lack of knowledge about our cultural heritage. As a result,/As a consequence, they may not appreciate the historical values of the site.
• This problem can be solved if we integrate heritage education into schools / To deal with this problem, we should organize more field trips for students.

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