CROSSWORD PUZZLE - SCIENCE

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Across
  1. 5. production of fish on a large scale.
  2. 8. chemical substances that are rich in nutrients and essential for plant growth.
  3. 9. the process of loosening and turning of the soil is called tilling or _________________.
Down
  1. 1. process of cutting the matured crops.
  2. 2. crops which are grown in winter season.
  3. 3. crops which are sown in the rainy season.
  4. 4. a chemical substance used for controlling and destroying pests
  5. 6. plants of the same kind grown and cultivated at 1 place on a large scale.
  6. 7. this tool is made of wood and is drawn by a pair of bulls or other animals.