Rearrange the following sentences to form a meaningful passage:
1. Ocean acidification is a consequence of increased CO2 emissions. 2. This leads to a decline in marine biodiversity. 3. Coral reefs are particularly vulnerable to acidification. 4. Urgent action is required to reduce emissions and mitigate damage.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 1-3-2-4.
Logical flow:
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1: This sentence acts as the introductory statement, identifying the primary phenomenon (Ocean acidification) and its root cause (CO2 emissions).
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3: This follows by narrowing the focus to a specific and highly sensitive ecosystem—Coral reefs—which are "particularly vulnerable" to the acidification mentioned in sentence 1.
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2: This describes the direct result of the damage to those reefs and ecosystems, noting that it "leads to a decline in marine biodiversity."
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4: This serves as the concluding call to action, stating that urgent action is needed to address the emissions and damage described in the previous sentences.
Correct sequence: 1 → 3 → 2 → 4
Final Sentence/Passage: Ocean acidification is a consequence of increased CO2 emissions. Coral reefs are particularly vulnerable to acidification. This leads to a decline in marine biodiversity. Urgent action is required to reduce emissions and mitigate damage.
Hence, the chosen option is correct.