Agriculture Crossword Puzzle chapters 1-7

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Across
  1. 4. fuel derived from biological materials such as crops and animal waste
  2. 7. the degradation of biological potential of land
  3. 8. study of chemical and physical process of an animal
  4. 10. proteins capable of catalyzing reactions associated with specific substrate
  5. 14. act of urinating
  6. 15. chemical substance that provides nourishment for the body
  7. 16. a measurement of food energy
  8. 18. tall grass vegetation belts in hot areas
  9. 19. decayed organic matter used for fertilizing and conditioning land
  10. 20. soft, moist moss held between layers of cloth
  11. 21. all of the feed consumed by an animal
Down
  1. 1. a crop grown specifically with intent of marketing
  2. 2. study of body's need and mechanism
  3. 3. animals that eat both meat and plant
  4. 5. compounds composed of combinations of amino acids
  5. 6. short grass vegetation zones
  6. 9. the science of heredity and variation of inherited characteristics
  7. 11. having only one stomach
  8. 12. the largest of the ruminant fore- stomach
  9. 13. A pouch like structure at the beginning of the large intestine
  10. 17. hooved animals that have a rumen