Multiple choice

Why did 95% of life go extinct at the end of the Paleozoic era?

  1. a meteor crashed into Earth

  2. extreme volcanism

  3. an ice age

  4. dinosaurs attacked

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Permian-Triassic extinction event, which ended the Paleozoic era, is widely attributed to massive volcanic eruptions (the Siberian Traps) that caused extreme climate change.