Vocabulary test

Fill in the missing words. Use the following expressions:
GREENHOUSE   HOMELESS   TRAFFIC JAM   EARTHQUAKE   CROWDED   UNEMPLOYED   POLLUTION   FOREST FIRES   FLOODS   NOISE
  1. The number of  people is rising. Last year there were about 50,000 people without a job. This year it has grown to 75,000.
  2. The square was  with dissatisfied citizens. There were thousands of them!
  3. I'm going to the conference about  effect. I'm interested in ecology.
    !greenhouse effect
  4. We moved out of the city because of air 
    pollution
  5. I've got stuck in the . I'll come later.
    traffic jam
  6. It was the biggest  in the last century. Many towns were damaged and thousands of people were killed.
    earthquake
  7. The police can't do anything about the  people. They have nowhere to go!
  8. The 1997  weren't as hard as the ones in 2002. The water in the river rose by 3 meters!
    !flood
  9.  is one of the biggest problems of cities. 
    Noise
  10. There are a lot of  in Australia. Some of them are started by people.
    !forest fire