I agree with the person above - I'd say the correct answer is B. The greenhouse effect is changing Earth's atmosphere.
A is incorrect because the excerpt says that the atmosphere keeps the Sun's heat from leaking away into space. C is incorrect because it is the greenhouse effect that keeps the planet warm. D is not even mentioned in the text, which means that only B is correct.
Uhhhh have u tried searching for clues like dates
The adjective undefiled means <em>pure</em>, <em>immaculate</em>.
The words in this sentence which help the readers infer the meaning of this word are the words <em>pure </em>and <em>genuine</em>, because they are synonymous with the word <em>undefiled</em>. The writer uses these two synonyms to describe the sources and the diction which links to the writers before restoration.
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