Investigation 8 2b

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Investigation 8 2b

  1. 1. <ul><li>What factors determine the rate at which a population can increase in size? </li></ul>Reproductive Potential
  2. 3. What might happen to the populations of walkingsticks and birds in the bush environment over time?
  3. 4. Limiting Factors <ul><li>Besides predation by birds, what other factors might limit the walkingstick population? </li></ul><ul><li>Are these factors biotic or abiotic? </li></ul>
  4. 5. Migrating Birds
  5. 6. Webbed Feet
  6. 7. Swimming Upstream
  7. 8. Long Legs
  8. 9. Nocturnal Hunting
  9. 10. How would you describe these organisms?
  10. 11. FEATURE <ul><li>Any general structure, characteristic, or behavior of an organism </li></ul><ul><ul><li>Wings, fur, pattern, color and migration </li></ul></ul><ul><ul><li>ALL have this </li></ul></ul>
  11. 12. TRAIT <ul><li>The specific expression of a feature in an individual </li></ul><ul><ul><li>Wing length, number of spots, thickness of fur, intensity of color, timing of migration </li></ul></ul><ul><ul><li>SOME have this </li></ul></ul>
  12. 19. VARIATION <ul><li>When there are several traits for the same feature in a population </li></ul><ul><ul><li>One example are the 3 different colors exhibited by walking sticks </li></ul></ul><ul><li>Allows a population to survive even if the environment changes </li></ul>
  13. 20. Reflection page 68 <ul><li>Draw and color an illustration of an organism or organisms and identify the feature, trait and variation included in your picture. </li></ul>

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