3. Complete each sentence with a word or phrase from the box.

(Hoàn thành mỗi câu với một từ hoặc cụm từ từ hộp)

habitat          cutting down trees

ecosystem          endangered species

carbon dioxide

1. People in my neighbourhood are doing a lot to save _______________.

2. Con Dao National Park provides a rich _______________ for marine life.

3. Forests help release oxygen and absorb _______________; they also provide homes for many species.

4. _______________ is a serious environmental concern as it harms natural habitats.

5. An _______________ maybe a whole forest, or a small pong, and it can be of any size.