One world

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Across
  1. 4. If you _____ something, you make it smaller in size or amount, or less in degree
  2. 6. If there is a problem of _________ in an area, there are more people living there than can be supported properly
  3. 7. warming the gradual rise in the earth's temperature caused by high levels of carbon dioxide and other gases in the atmosphere
  4. 8. a wall that is built across a river in order to stop the water flowing and to make a lake
  5. 10. a shaking of the ground caused by movement of the Earth's crust
  6. 11. a low stretch of land between hills, especially one that has a river flowing through it.
  7. 13. an important subject that people are arguing about or discussing
Down
  1. 1. If there is a ____, a large amount of water covers an area which is usually dry, for example when a river flows over its banks or a pipe bursts
  2. 2. bin a container for waste that will be recycled, for example, paper or glass
  3. 3. an extremely violent wind or storm
  4. 5. the action of clearing a wide area of trees.
  5. 9. a part of a coast where the land curves inwards
  6. 12. When a volcano _____, it throws out a lot of hot, melted rock called lava, as well as ash and steam