There is really no room for anyone's "opinion" on what killed the dinosaurs. There is a consensus based on the evidence we have found.
The most widely accepted explanation for the extinction of the dinosaurs is the Chicxulub asteroid that impacted the Yucatan Peninsula 65 million years ago. It would have caused a great deal of climate change in very little time and disrupted the food chain.
That was likely combined with a spike in volcanic activity that was probably already poisoning the atmosphere before the asteroid came. Anything that could not cope, including the dinosaurs, went extinct.
Not only the dinosaurs died, many marine and terrestrial species died out too.
But if you really want to know my opinion, I believe aliens visited the Earth, saw those ugly monsters, and decided to just annihilate them on the spot.
what is your conclusion about what killed the dinosaurs
No one knows what killed the dinosaurs.
it's what killed the dinosaurs.
some predict the the dinosaurs died of a big asteroid.
that's what killed the dinosaurs
The dinosaurs were killed by a very, very large rock called a woodwind.
Actually volcanos and meteorites killed the dinosaurs the crater hit Mexico and volcanos all over the world were the dinosaurs lived
Nobody knows for sure but they think dinosaurs were killed by a giant astroid.
because not all the dinosaurs were killed some survived
Man killed all dinosaurs because they saw them as killing pests and the also killed them for teeth,bones and skin. They could also be put into medicens.
No, the majority of the scientific community has come to the conclusion that the dinosaurs were killed off by a meteor impact 65 million years ago.
Dinosaurs hunted and killed other dinosaurs. A few huge relatives of crocodiles, such as Deinosuchus and Suchomimus, probably hunted dinosaurs. A few of the largest mammals alive at the time, such as Repenomamus, may have hunted dinosaur hatchlings. Scientists consider birds a subdivision of dinosaurs, in which case any animal that hunts birds kills dinosaurs. Of course, prehistoric pathogens would have killed some dinosaurs through disease.