PLANET EARTH

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Across
  1. 2. Things that are not wanted.
  2. 4. range A row of mountains.
  3. 5. A forest with a lot of tall trees where it rains a lot.
  4. 7. A large, hot, dry area of land with very few plants.
  5. 8. To become covered with water.
  6. 10. Damage caused to water, air, etc. by dirty or harmful substances.
  7. 12. An area of low land between hills or mountains.
Down
  1. 1. To use paper, glass, plastic, etc. again and not throw it away.
  2. 3. To rescue or bring out of danger.
  3. 4. To change from a solid into a liquid because of heat, or to make something do this.
  4. 6. An area of sand or stones next to the sea.
  5. 7. A long period when there is no rain and people do not have enough water.
  6. 9. spill An accident in which oil has come out of a ship and caused pollution.
  7. 11. layer Earth’s upper atmosphere that prevents most of the harmful ultraviolet radiation from the Sun reaching the Earth.