▶ Your Answer :
In this set of materials, both the reading and the lecture deal with mass extinction.
Regarding this issue, the lecturer contradicts the writer's claim that there was a mass extinction.
First, according to the lecturer, Sea level changed gradually.
He points out that coastal species would have adapted to new environment.
This point refutes the writer's argument that coastal species died and animal became extinct because
of fluctuating sea level. (너무 내용이적습니다 저가 시험볼때도 이 제문이 나왔는데 이것보다 말을 훨씬 많이 한걸로 기억합니다)
moreover, the lecturer goes on to say that sulfur dioxide can not stay long in atmosphere.
To be specific, when sulfur dioxide combines with oxygen, it changes into cloud and falls down with rain.
This answers the reading passage's opinion that sulfur dioxide made decrease in temperature so that animals were destroyed. killed
이것도 내용이 많이 부족한것같습니다...
Lastly, the lecturer mantions that an asteroid did not collide with the Earth.
Instead, If the asteroid collides with the Earth, there should have been a large cracter as the evidence.
but there was no cracter related with the mass extinction.
This casts doubt on the writer's claim that dust cloud produced when the asteroid collided with the Earth blocked sunlight which was the essential of living to plants and animals.
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