Question

The Cretaceous-Tertiary extinction, the most famous of the Big Five, has been attributed to what major event(s) that triggered the extinction of the dinosaurs? an asteroid hitting the earth massive volcanoes erupting around the world rapid growth of forests on land surfaces falling sea levels increased competition from mammals

Answer 1

This question has a two part answer. The first part is that an asteroid hitting the earth and the second part is massive volcanoes erupting around the world.

Answer 2

The correct answers are "an asteroid hitting the earth" and "massive volcanoes erupting around the world"

Step-by-step explanation:

The Cretaceous-Tertiary extinction was an event that take place approximately 66 millions years ago responsible of taking the life of about three-quarters of the plant and animal species on Earth. Two different events are the ones that contributed to this massive extinction: an asteroid hitting the earth and massive volcanoes erupting around the world. The asteroid was 10 to 15 km wide, impacted on Mexico's Yucatan Peninsula, and caused global environmental damage. This damage inlcude triggering the eruption of most active volcanos in the world.