Cenozoic Era Extinction Event
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Questions and Answers

During which era did the Paleozoic Era take place?

  • Mesozoic Era
  • Paleozoic Era (correct)
  • Precambrian Era
  • Cenozoic Era

Which period is known as the 'Age of the Trilobites'?

  • Silurian
  • Devonian
  • Ordovician
  • Cambrian (correct)

What was one significant event during the Paleozoic Era that led to a diversification of marine life forms?

  • Formation of supercontinent Pangea (correct)
  • Mass extinction of dinosaurs
  • Evolution of mammals
  • Impact of asteroids

Which species became dominant towards the end of the Paleozoic Era?

<p>Reptiles (D)</p> Signup and view all the answers

Why is the Cambrian Period significant in the Paleozoic Era?

<p>Cambrian Explosion led to a diversification of marine life forms (D)</p> Signup and view all the answers

What major event during the Cenozoic Era is believed to have caused mass extinction?

<p>Impact of an asteroid (B)</p> Signup and view all the answers

Which marine animal group is noted to have extinct before the dinosaurs existed?

<p>Trilobites (C)</p> Signup and view all the answers

Which era is characterized by the presence of flowering plants as dominant land features?

<p>Cenozoic Era (D)</p> Signup and view all the answers

Which of the following first appeared during the Cenozoic Era according to the text?

<p>Humans (A)</p> Signup and view all the answers

What caused tremendous forest fires during the impact event mentioned in the text?

<p>Tremendous amount of dust in the atmosphere (A)</p> Signup and view all the answers

Which animals became dominant during the Cenozoic Era?

<p>Mammals (D)</p> Signup and view all the answers

What led to the extinction of plants and animals during the Cenozoic Era according to the text?

<p>Climatic changes and glacier events (C)</p> Signup and view all the answers

What catastrophic event is hypothesized to have caused the mass extinction that ended the era?

<p>Large asteroids or comets impacting Earth (D)</p> Signup and view all the answers

During which geological time period did Pangaea start to separate?

<p>Triassic Period (A)</p> Signup and view all the answers

What were the first animals to appear during the Mesozoic Era's Triassic Period?

<p>Dinosaurs (D)</p> Signup and view all the answers

What became the dominant group of animals during the Mesozoic Era according to the text?

<p>Dinosaurs (A)</p> Signup and view all the answers

Which of the following land features first appeared during the Mesozoic Era's Cretaceous Period?

<p>Flowering plants (C)</p> Signup and view all the answers

How could a meteorite impact cause a mass extinction according to the text?

<p>By blocking out sunlight with debris (A)</p> Signup and view all the answers

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