the United Nations need to work out international agreements and strict laws on the tourist industry.

the impact of tourism can be devastating.

the International Day of Ecotourism helps promote sustainable practices in this growing industry.

Ecotourism is a unique way for travellers to engage in sustainable tourism while vacationing.

Ecotourism is making animals become less cautious about other animals.

Ecotourism is booming and tour operators say this helps nature.

Hunting animals may lead to their extinction.

The worst impact of tourism is the massive loss of land.

Some tourist areas have suffered from some environmental damage.

Eco tours in our country involve mainly travel to natural places.

. Some farmers in the Mekong Delta have attracted hundreds of foreign visitors to their ecological gardens.

To build hotels, people destroy forests.

A lot of waste from hotels and vehicles is also discharged into the water and air.

Cuting down trees or hunting wild animals may upset the ecological balance of an area.