II. Choose the word whose main stress pattern is placed differently.

1. A. environment B. temperature C. botanical D. contaminant

2. A. untreated B. aquatic C. pollution D. electronic

3. A. pollute B. poison C. damage D. illustrate

4. A. presentation B. radioactive C. environmental D. contamination

5. A. permanent B. Chemical C. dramatic D. herbicide

III. Complete each sentence with an appropriate word. The first letter of each word is given.

1. The fish have died because the river water is heavily p________.

2. Health e________ from air pollution include lung cancer, and respiratory diseases.

3. Acid rain causes serious d________ to plants and trees.

4. If the air wasn’t dirty, Nick w________ sneeze so much.

5. The main gases that l________ to acid rain are sulfur dioxide and nitrogen dioxide.

6. There is a danger of serious contamination from radioactive w________.

7. Hundreds of d________ fish were found floating in the river near the factory.

8. U________ sewage can spread disease and contaminate drinking water sources.