Unit 4 Vocabulary

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Across
  1. 2. When organisms fight for the same resources
  2. 4. From the time before written records
  3. 5. An animal that hunts other animals
  4. 7. A sudden increase in disease cases
  5. 9. An animal hunted by another animal
  6. 10. A plant grown for food or other use
  7. 12. The total amount of living matter in an area
  8. 16. A group of the same species living in one area
  9. 18. A gas used by plants during photosynthesis
  10. 19. A community of organisms and their environment
  11. 21. The process cells use to release energy from food
  12. 22. The largest population an environment can support
  13. 26. Conditions that restrict population growth
  14. 29. Native to a certain area
  15. 30. A simple sugar used for energy
  16. 31. A series showing how energy moves through organisms
  17. 32. An organism that eats other organisms
Down
  1. 1. A network of connected food chains
  2. 3. The process plants use to make food from sunlight
  3. 5. A substance formed during a chemical reaction
  4. 6. A rapid spread of disease in a population
  5. 8. The shift from hunting and gathering to farming
  6. 11. A living thing
  7. 13. The molecule that stores and transfers energy in cells
  8. 14. Equilibrium A balance in nature that changes over time
  9. 15. To break down food into simpler substances
  10. 17. The breakdown of dead organisms
  11. 20. Choosing organisms with desired traits to reproduce
  12. 23. A starting substance in a chemical reaction
  13. 24. An organism that makes its own food
  14. 25. Cell structures where energy is produced
  15. 27. To take in or soak up a substance
  16. 28. The practice of farming and growing crops