Mass Extinction Events Quiz

What was the primary cause of the Ordovician extinction?

• Algae overgrowth

• Asteroid impact

• Volcanic eruptions

• Global cooling and ocean level drops

How did the Devonian extinction primarily affect marine life?

• Increased ocean temperatures

• Depletion of oxygen levels

• Rise in sea levels

• Introduction of new predators

What was the main consequence of the Permian extinction?

• Dominance of marine invertebrates

• Emergence of mammals

• Rise of flowering plants

• Extinction of over 90% of species

Which extinction event allowed dinosaurs to become the dominant species on Earth?

• Ordovician extinction

• Cretaceous extinction

• Devonian extinction

• Triassic extinction

What triggered the Cretaceous extinction that wiped out the dinosaurs?

• Massive volcanic eruptions

• A large asteroid impact

• Global cooling

• A supernova explosion