作者：Maria Jose Sanz Castro 7 年以前
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The climate started changing, and dinosaurs weren't able to adapt every time the climate changed.
a very deadly and contagious disease circulated around the dinosaurs forcing them to became extinct.
The last one ended 10,000 years ago
A very severe ice age could have changed temperatures and frozen a lot of water.
The volcanic activity increase 65 million years ago, the activity could have pumped ash into the air blocking out the sun killing dinosaurs.
An asteroid collided Earth
Scientist think
That the asteroid threw so much dust to the air that sunlight wouldn't be able to shine plants and animals would die
