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

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