Circle the correct answer.

1. What was the most devastating mass extinction that our planet faced?
a. Permian extinction
b. Jurassic extinction
c. Cretaceous extinction

2. What caused the dinosaurs' extinction?
a. Volcanic eruptions
b. Cold weather
c. A meteorite

3. When did dinosaurs go extinct? Answer in a complete sentence.



Answer :

Final answer:

The Permian extinction was the most devastating mass extinction, leading to the loss of 95% of species. Dinosaurs went extinct at the end of the Cretaceous period due to a meteorite impact. The extinction event occurred approximately 65 million years ago.


Explanation:

The most devastating mass extinction in Earth's history was the Permian extinction, which occurred at the end of the Permian period. It resulted in the loss of around 95% of existing species at that time. Warming of the Earth's climate due to volcanic activity in Siberia is believed to have been a major factor in this extinction event.

Dinosaurs went extinct at the end of the Cretaceous period due to an event caused by a meteorite. The impact threw dust into the atmosphere, blocking sunlight and leading to a chain of events that ultimately resulted in the extinction of dinosaurs.

Dinosaurs went extinct approximately 65 million years ago, at the end of the Cretaceous period, due to the impact of a massive asteroid near the Yucatan Peninsula in Mexico.


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