Environment protection

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Across
  1. 3. a sudden and violent movement of the earth's surface
  2. 5. Many species of plants and animals are endangered
  3. 8. Increase in overall temperature of earth
  4. 9. The gas that forms when coal is burnt
  5. 10. Unwanted matter or material
Down
  1. 1. Things like minerals,forests,coal,etc
  2. 2. Cutting down of trees
  3. 4. the ability to decompose naturally and harmlessly
  4. 6. A mountain with a large hole at the top
  5. 7. A long period in which there is little or no rain