Environmental destruction

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Across
  1. 6. removing or destroying many trees
  2. 9. trees found in swamps near the sea
  3. 10. severe storm with very strong winds
Down
  1. 1. garbage or rubbish not properly disposed
  2. 2. large amounts of water flowing over the land
  3. 3. to make unclean
  4. 4. violent shaking of the earth
  5. 5. a place where magma can escape from inside the earth
  6. 7. where the sea meets the shore
  7. 8. wearing away the topsoil