Environment

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Across
  1. 2. not showing a proper sense of responsibility
  2. 4. a prolonged period of abnormally low rainfall
  3. 6. the production and discharge of something
  4. 7. Change in state from solid to liquid
Down
  1. 1. seriously at risk of extinction
  2. 3. existing in or caused by nature
  3. 5. Find new ways to use a product