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?\nan asteroid impact caused the sun to be blocked.\nthey were crushed by an asteroid.\nthe water supplies were polluted.\nmammals evolved to be better competitors.

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?\nan asteroid impact caused the sun to be blocked.\nthey were crushed by an asteroid.\nthe water supplies were polluted.\nmammals evolved to be better competitors.

Answer

Brief Explanations:

La extinción masiva de los dinosaurios hace 65 millones de años se cree que fue causada por el impacto de un asteroide. El impacto lanzó polvo y partículas al cielo, bloqueando la luz solar, lo que afectó la fotosíntesis y el ecosistema. Las otras opciones no son la causa principal. Las sustancias en el polvo son consecuencia del impacto, los dinosaurios no fueron aplastados directamente por el asteroide y la contaminación de agua no fue la causa determinante. Además, los mamíferos evolucionaron después de la extinción de los dinosaurios y no fueron un factor en su extinción.

Answer:

An asteroid impact caused the Sun to be blocked.