65 million years ago there was a mass extinction that is best known for killing the dinosaurs. there was…

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?\no an asteroid impact caused the sun to be blocked.\no they were crushed by an asteroid.\no the water supplies were polluted.\no mammals evolved to be better competitors.
Answer
Answer:
An asteroid impact caused the Sun to be blocked.
Brief Explanations:
Se encontró una gran cantidad de polvo con sustancias de asteroides en la época de la extinción masiva. Un impacto de asteroide probablemente bloqueó el Sol, causando cambios climáticos mortales para los dinosaurios.