An example of worldwide climatological and ecosystem change caused by a geologic event is the____________.
A) Permo-Triassic meteorite impact event
B) impact of a meteor at the end of the Cretaceous
C) increase in the atmospheric oxygen content from approximately 1 to 22%, at the end of the Cretaceous
D) Cambrian eruption of approximately 3 million cubic km of basalt in what is now Siberia

Question

Quizplus · Accepted Answer

The impact of a meteor at the end of the Cretaceous is known as the K-T extinction event, which caused widespread changes in climate and ecosystems worldwide. It is believed to have led to the extinction of the dinosaurs and many other species, and caused mass extinctions in marine and terrestrial environments. This event also led to the formation of the Chicxulub crater in the Yucatan Peninsula, which is evidence of the impact.

An Example of Worldwide Climatological and Ecosystem Change Caused by a Geologic