Improvement in food resources

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Across
  1. 3. An Italian bee variety that sting less.
  2. 7. An example of a plant that competes for space and nutrition with crops (7 letters
  3. 8. system An irrigation system that lifts water from a river or other source to fields using pumps or mechanical devices (15 letters)
  4. 10. Floral sources of nectar and pollen for bees (7 letters)
  5. 12. The crossing between genetically dissimilar plants (12 letters)
  6. 13. Fish culture where different species don't compete for food among themselves (10 letters)
  7. 15. Animals that are specifically bred and raised for milk production (5 letters)
  8. 17. A breed of dairy cattle known for its high milk yield (10 letters)
  9. 18. Fishing activities carried out in freshwater bodies, such as rivers and lakes (13 letters)
Down
  1. 1. An example of marine fish (4 letters)
  2. 2. The practice of mating two different breeds of animals to improve traits (11 letters)
  3. 4. The farming practice of raising fish and other aquatic organisms in controlled environments (10 letters)
  4. 5. Zinc and copper (13 letters)
  5. 6. The agricultural practice of growing different crops in a sequence to improve soil fertility and prevent pests (11 letters)
  6. 9. A type of poultry raised primarily for egg production (5 letters)
  7. 11. A type of aquatic organism with a hard shell, often harvested for food (9 letters)
  8. 14. A type of fish used in aquaculture, known for controlling aquatic weeds (10 letters)
  9. 16. Example of an oil seed (9 letters)
  10. 19. A desi breed of chicken (5 letters)