Land degradation and desertification

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Across
  1. 1. having reliable access to a sufficient quantity of affordable, nutritious food
  2. 4. the process by which fertile land becomes desert, typically as a result of drought, deforestation, or agriculture
Down
  1. 2. a group of organisms and their physical environment
  2. 3. a plant that creates oxygen and lives near the sand
  3. 5. low rainfall leading to a lack of water
  4. 6. process of farming