Rewrite the sentence into the other voice, without changing its meaning. Antarctic ice cores provide a history of the atmosphere for thousands of years and make known carbon dioxide levels reached a distinct minimum around 1610.
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A.
A history of the atmosphere for thousands of years was provided and that carbon dioxide levels reached a distinct minimum around 1610 is made known by Antarctic ice cores
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B.
A history of the atmosphere for thousands of years is provided and that carbon dioxide levels reached a distinct minimum around 1610 is made known by Antarctic ice cores
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C.
A history of the atmosphere for thousands of year is provided and that carbon dioxide levels reached a distinct
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D.
A history of the atmosphere for thousands of years will be provided and that carbon dioxide levels reached a distinct minimum around 1610 would have been made known by Antarctic ice cores
Correct Answer:
B. A history of the atmosphere for thousands of years is provided and that carbon dioxide levels reached a distinct minimum around 1610 is made known by Antarctic ice cores
Explanation:
Option (b) has the correct voice without changing the meaning of the sentence. Hence, option (b) is correct.
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