Climate and environment

12345678910
Across
  1. 3. a naturally occurring mineral containing a valuable constituent (such as metal)for which it is mined and worked
  2. 6. an indication that something has been present
  3. 8. capable of ignoring and burning
  4. 9. being of crucial importance
  5. 10. to make less or cause to appear less
Down
  1. 1. a sudden violent change in the earth's surface
  2. 2. highly injurious or destructive.
  3. 4. oppressively hot
  4. 5. severe of weather
  5. 7. moderately warm, lukewarm