2. Choose the correct word or phrase to complete each of the following sentences.
(Chọn từ hoặc cụm từ đúng để hoàn thành mỗi câu sau.)
1. Pollution is one of the main reasons for the destruction of the ecotour / ecosystem.
2. We're going on a(n) eco-friendly / user-friendly fieldtrip to the countryside this weekend.
3. Tourists are not allowed to litter / rubbish in the park.
4. Mass tourism / Ecotourism helps to protect the natural environment.
5. Habitat loss is one of the greatest threats to biodiversity / biology.
1. Pollution is one of the main reasons for the destruction of the ecotour / ecosystem.
2. We're going on a(n) eco-friendly / user-friendly fieldtrip to the countryside this weekend.
3. Tourists are not allowed to litter / rubbish in the park.
4. Mass tourism / Ecotourism helps to protect the natural environment.
5. Habitat loss is one of the greatest threats to biodiversity / biology.