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Leikakei113 Leikakei113
wrote...
Posts: 701
Rep: 1 0
6 years ago

Which event is thought to have been a cause for past mass extinctions?
  a. A massive earthquake
  b. A massive tsunami
  c. An epidemic
  d. The collision with an asteroid or comet
  e. The most prolonged ice age

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6 years ago
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