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  [unemployed] 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  [crowded] with dissatisfied citizens. There were thousands of them!
  3. I'm going to the conference about  [greenhouse] effect. I'm interested in ecology.
    !greenhouse effect
  4. We moved out of the city because of air  [pollution] . 
    pollution
  5. I've got stuck in the  [traffic jam] . I'll come later.
    traffic jam
  6. It was the biggest  [earthquake] in the last century. Many towns were damaged and thousands of people were killed.
    earthquake
  7. The police can't do anything about the  [homeless] people. They have nowhere to go!
  8. The 1997  [floods] weren't as hard as the ones in 2002. The water in the river rose by 3 meters!
    !flood
  9.  [Noise] is one of the biggest problems of cities. 
    Noise
  10. There are a lot of  [forest fires] in Australia. Some of them are started by people.
    !forest fire