Multiple choice

When did dinosaurs become extinct?

  1. 65 million years ago

  2. 65 billion years ago

  3. 250 million years ago

  4. 475 million years ago

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

The mass extinction event that wiped out the non-avian dinosaurs occurred approximately 65 to 66 million years ago at the end of the Cretaceous Period.