I

1, natural

2, harmful

3, contaminated

4, polluted

5, unable

6, environmental

7, contaminated

8, Industrial

9, death

10, Pollution

11, pollutants

12, difficulty

II

1, If a person looks at the sky at night, he will not be able to see the Milky Way by naked eye.

2, If noise pollution happens regularly, it will cause stress or …(từ này mình không nhìn rõ)

3, If water pollution gets more serious in the future, it will affect the development of economy and society.

4, If Australia has invested in water in Viet Nam with good results, half of the population in the rural areas will have access to fresh water.

5, If you use compact light bulb, you will save a lot of energy.

6, If we plant more trees, we will have more space.

III

Do đề mờ quá nên mik không làm được nhé, bạn thông cảm ☹