environment

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Across
  1. 3. The process of catching too many fish, depleting the population.
  2. 4. Changes in long-term weather patterns on Earth.
  3. 6. Materials that are discarded as no longer useful or required.
  4. 7. The discharge of gases, especially from vehicles or factories.
Down
  1. 1. Permanent destruction of forests for other land uses.
  2. 2. The release of harmful substances into the environment.
  3. 5. A species at risk of becoming extinct.