What event is believed to have contributed to the mass extinction of the dinosaurs 66 million years ago?

A: climate change.
B: a volcanic eruption.
C: an asteroid collision.
D: a meteor shower.

1 answer

C: an asteroid collision.

The mass extinction of the dinosaurs 66 million years ago is widely attributed to a massive asteroid impact, specifically the Chicxulub impactor, which struck the Yucatán Peninsula in present-day Mexico. This event created significant environmental changes that contributed to the extinction of approximately 75% of Earth's species, including the dinosaurs.