ENVIRONMENT

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Across
  1. 4. to use something again
  2. 7. to stop someone or something from being killed, injured, or destroyed
  3. 8. to become or to make something become smaller in size, amount, degree, importance, etc.
  4. 9. a mountain with a large, circular hole at the top through which lava (= hot liquid rock) gases, steam, and dust are or have been forced out
  5. 10. a long period when there is little or no rain
Down
  1. 1. an extremely large wave caused by a violent movement of the earth under the sea
  2. 2. to damage something so badly that it cannot be used
  3. 3. damage caused to water, air, etc. by harmful substances or waste
  4. 5. one of many large rocks that circle the sun
  5. 6. to sort and collect rubbish in order to treat it and produce useful materials that can be used again