Asher crossword

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Across
  1. 5. A common industrial gas.
  2. 6. An important natural system destroyed by greenhouse gases.
  3. 8. Ultra-large-scale temperature rise.
  4. 10. Gas emitted by the factory.
Down
  1. 1. The gas that raises the temperature of the Earth.
  2. 2. Meetings of some major countries.
  3. 3. Things that make marine creatures sad.
  4. 4. Things that make polar bears and some animals sad.
  5. 7. The Earth has undergone major change in some aspects.
  6. 9. A greenhouse gas commonly produced by cattle.