CrossWord Puzzle: Period 3

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Across
  1. 10. Refers to the efficient and effective planning and management of plant nutrients
  2. 11. Any gaseous compound in the atmosphere.
  3. 13. Area or ridge of land that separates waters flowing to different places
  4. 14. Rearing of aquatic animals or the cultivation of aquatic plants for food.
  5. 18. Constrains a population's size and keeps it from growing.
  6. 19. Weather condition in an area.
  7. 20. Basic physical, and organized structures and facilities.
  8. 21. Produce or provide.
Down
  1. 1. Suffering from lack of nutrients.
  2. 2. Able to work with.
  3. 3. Use up the supply or resources of.
  4. 4. Natural home or environment of plants, animals, or other organisms.
  5. 5. Substance that provides nourishment.
  6. 6. Species that live in an area without any human intervention.
  7. 7. Save the supply or resources of.
  8. 8. Land that grows near bodies of water.
  9. 9. Tillage practice that builds up crop residues.
  10. 12. The top layer of Earth that is used to help plants grow.
  11. 15. Science or practice of farming, including cultivation of the soil.
  12. 16. Able to produce a desired or intended result.
  13. 17. Preparing an area to grow crops.