Question

65 million years ago there was a mass extinction that is best known for killing the dinosaurs. There was also a large deposit of dust that contained substances only found in asteroids. What most likely killed off the dinosaurs?

An asteroid impact caused the Sun to be blocked.
They were crushed by an asteroid.
The water supplies were polluted.
Mammals evolved to be better competitors

Answer 1

A

Step-by-step explanation:

An asteroid impact caused the Sun to be blocked.

Answer 2

the gigant asteroid could have caused gigant tsunamis and could made most of the volcanos of the world explode