the environment

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Across
  1. 1. an overflow of water that submerges land that is usually dry.
  2. 4. the process of converting waste materials into new materials and objects.
  3. 10. ability to exist constantly
  4. 11. ...... effect- the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without this atmosphere.
  5. 12. the broadest sense, is the natural, physical, or material world or universe.
Down
  1. 2. threatens ocean health by reducing fish stocks.
  2. 3. a type of land degradation in drylands in which biological productivity is lost due to natural processes or induced by human activities whereby fertile areas become increasingly arid.
  3. 5. a colorless gas with a density about 53% higher than that of dry air.
  4. 6. a persistent body of dense ice that is constantly moving under its own weight.
  5. 7. unwanted or unusable materials, any substance which is discarded after primary use, or is worthless, defective and of no use.
  6. 8. the introduction of contaminants into the natural environment that cause adverse change
  7. 9. a violently rotating column of air that is in contact with both the surface of the Earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud.