Sky Farm Crossword!

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Across
  1. 4. The practice of growing plants in the absence of soil, in the presence of air or a mist.
  2. 5. The variety of all living things and their interactions.
  3. 6. The increase in the proportion of people living in towns and cities.
  4. 7. The name of the first ever Sky Farm
Down
  1. 1. Chemical substances that is meant to kill pests.
  2. 2. The technique of growing plants using a water-based nutrient solution rather than soil.
  3. 3. Something grown in a farm.
  4. 8. An urban farming method.