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Ch. 4 Lesson 3 How do environments change?
succession <ul><li>gradual change in an ecosystem </li></ul><ul><li>climates change slowly </li></ul>
succession <ul><li>occurs in  </li></ul><ul><li>stages </li></ul>
extinct <ul><li>species has completely died out </li></ul><ul><li>caused by climate changes, volcanoes, meteors </li></ul>
extinction in modern times caused by human activities-ex. habitat destruction passenger pigeon
endangered <ul><li>species that is reduced & may die out  </li></ul><ul><li>in danger of becoming extinct </li></ul>There ...
Find the  Endangered Animals game
black rhinoceros
threatened <ul><li>species may soon become endangered- just a step behind becoming endangered </li></ul>giraffe
green sea turtle
extinct endangered threatened
fossils <ul><li>show that Earth has changed over time </li></ul><ul><li>tell us about environment long ago </li></ul>
Fossils show that woolly mammoths are similar to today’s _____________ elephants
Factors that cause  rapid  environmental changes :
hurricanes
 
fire
floods
volcanic eruptions
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4th Grade-Ch. 4 Lesson 3 How do environments change

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Transcript of "4th Grade-Ch. 4 Lesson 3 How do environments change"

  1. 1. Ch. 4 Lesson 3 How do environments change?
  2. 2. succession <ul><li>gradual change in an ecosystem </li></ul><ul><li>climates change slowly </li></ul>
  3. 3. succession <ul><li>occurs in </li></ul><ul><li>stages </li></ul>
  4. 4. extinct <ul><li>species has completely died out </li></ul><ul><li>caused by climate changes, volcanoes, meteors </li></ul>
  5. 5. extinction in modern times caused by human activities-ex. habitat destruction passenger pigeon
  6. 6. endangered <ul><li>species that is reduced & may die out </li></ul><ul><li>in danger of becoming extinct </li></ul>There are only about 1,600 pandas left in the wild, and about 160 living in zoos.
  7. 7. Find the Endangered Animals game
  8. 8. black rhinoceros
  9. 9. threatened <ul><li>species may soon become endangered- just a step behind becoming endangered </li></ul>giraffe
  10. 10. green sea turtle
  11. 11. extinct endangered threatened
  12. 12. fossils <ul><li>show that Earth has changed over time </li></ul><ul><li>tell us about environment long ago </li></ul>
  13. 13. Fossils show that woolly mammoths are similar to today’s _____________ elephants
  14. 14. Factors that cause rapid environmental changes :
  15. 15. hurricanes
  16. 17. fire
  17. 18. floods
  18. 19. volcanic eruptions
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