Question 1:

Which mass extinction event is associated with the disappearance of dinosaurs?

Explanation: The disappearance of dinosaurs is associated with the Cretaceous-Paleogene extinction event, caused by the impact of a large asteroid or comet.

Question 2:

Which mass extinction event is considered the most severe in Earth's history?

Explanation: The Permian-Triassic extinction event, also known as the "Great Dying," is considered the most severe mass extinction event in Earth's history, with an estimated 96% of marine species and 70% of terrestrial vertebrate species going extinct.

Question 3:

Which mass extinction event is associated with the formation of the supercontinent Pangaea?

Explanation: The formation of the supercontinent Pangaea is associated with the Late Permian extinction event, also known as the Permian-Triassic extinction event.

Question 4:

Which mass extinction event is associated with the rapid diversification of mammals?

Explanation: The rapid diversification of mammals is associated with the recovery period following the Cretaceous-Paleogene extinction event.

Question 5:

Which mass extinction event is associated with the first appearance of complex, multicellular life forms?

Explanation: The first appearance of complex, multicellular life forms is associated with the Ordovician-Silurian extinction event.