Mass Extinctions

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  1. 2. caused the 2nd mass extinction
  2. 3. what caused the 1st and 3rd mass extinction?
  3. 4. changes in ___ ____ caused the 3rd, 4th, and 5th mass extinctions
  4. 6. species lost in the 2nd mass extinction
  5. 8. Massive floods of lava erupted from the _____ province caused the 2nd mass extinction
  6. 11. the opposite of global warming; caused the 4th mass extinction
  7. 13. a similarity between the 1st, 3rd, and 4th mass extinctions
  8. 15. 85% of species were lost in the ____ mass extinction
  9. 17. This mass extinction wiped out mammal-like organisms
  10. 20. what is the 5th mass extinction?
  11. 21. This mass extinction wiped out dinosaurs and flying reptiles
  12. 23. The 4th mass extinction was caused by the _____ of ocean waters
Down
  1. 1. organisms that were lost in the 3rd, 4th, and 5th mass extinctions
  2. 5. ____ _____ is the main cause of the sixth mass extinction
  3. 7. What caused the 5th mass extinction?
  4. 9. life in ____ _____ lost during 4th mass extinction
  5. 10. Reduced atmospheric levels of ___ ____ due to spread of terrestrial plants caused the 4th mass extinction
  6. 12. 70% of species were lost in the ___and____ mass extinction
  7. 14. This mass extiction had the most species wiped out
  8. 16. Land dwelling ____ were lost im the 3rd mass extinction
  9. 18. ___ ____ will be extincted during the sixth mass extinction
  10. 19. what is the 4th mass extinction?
  11. 22. flutuations in _____ caused the 1st and 3rd mass extinction