Question

Which one of the following major mass extinctions is the most recent?

• A. Cretaceous-Paleogene
• B. Late Devonian
• C. Permian-Triassic
• D. Triassic-Jurassic

Hint:

The Cretaceous-Paleogene extinction event is best known for the extinction of dinosaurs, caused by a combination of volcanic activity, climate change, and an asteroid impact.

Answer 1

The Correct Option is A

Step 1: Understanding the mass extinctions.
The most recent mass extinction event is the Cretaceous-Paleogene (K-Pg) extinction, which occurred around 66 million years ago and is most famous for the extinction of the dinosaurs. This event marked the end of the Mesozoic Era and the beginning of the Cenozoic Era.

Step 2: Explanation of other options.
(B) Late Devonian occurred around 360-375 million years ago, primarily affecting marine life.
(C) Permian-Triassic extinction, about 252 million years ago, was the largest extinction event in Earth's history, wiping out nearly 90% of life.
(D) Triassic-Jurassic extinction occurred about 201 million years ago, marking the end of the Triassic period and paving the way for the dinosaurs to dominate.

Step 3: Conclusion.
The correct answer is (A) Cretaceous-Paleogene, as it is the most recent of the major mass extinction events.