Question

What caused most of the dinosaurs to go extinct and how do scientists know?

Answer 1

The answer is simple an astriod hit earth before it was a living thing it made living. Scientists don’t really know because no one was there to write it down. So it is actually a theory. Hope this helps.
Umm just to make your day
Kenji Kon - Farts killed the dinosaurs
( watch it on Netflix if you want camp Cretaceous)

Answer 2

Answer: an asteroid hit the earth and made a lot of problems for there health.

The huge crater in Mexico.

If I remember correctly.

If you need more information

Watch

geographics how the dinosaurs died

Step-by-step explanation: