Biology unit 2

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Across
  1. 2. intestine site of water reabsorption
  2. 5. the unit of mass
  3. 6. removal of undigested food material
  4. 11. stores food temporaily and starts the digestion
  5. 12. breaking down glucose to produce ATP
  6. 16. feeds on dead organic material especially plant detritus
  7. 17. equals 1000
  8. 19. the mass of living organisms in a given area
  9. 20. organism that eats plants
Down
  1. 1. carbohydrate that makes up plant cell
  2. 3. organism that eats meats
  3. 4. single subunit of macromolecule
  4. 7. mechanical stomach of bird
  5. 8. organism that eats both plants and meats
  6. 9. interaction of organisms when both require the same limited resources
  7. 10. chemical reactions in the body's cells that change food into energy
  8. 13. intestine site of digestion and nutrient absorption
  9. 14. animal that is caught and killed by another for food
  10. 15. animals with a back bone
  11. 18. environmental factors and inter-species relationships that influence the species