IV. Choose the correct words in the bracket to complete the sentences.

1. The _________________________ of fossil fuels has gradually increased in many countries which is concern for many environmentalists.

2. The increase in cases of skin cancer has been recorded in parallel with ozone layer _____________________.

3. Intensive pesticide and fertilizer spays used in agriculture have resulted in the serious ___________________

of water, soil and air.

4. The _________________ of this river has been proved by scientists to be caused by the dumping of untreated sewage.

5. Scientists are able to explain the consequences of habitat ___________________ now.

6. Every year about 15,000 acres of fertile topsoil are washed away in Haiti, which has resulted in massive soil __________________________.

7. The _____________________ of the environment from threats such as deforestation, the extinction of rare species, pollution and natural resource depletion is one of the WWF's missions.

8. The _______________________ caused during the 20^th century made the vegetation in this region, which has originally a vast forest refuge for innumerable species, disappear.

Unit 9 - (HS)