Numerical answer
The five sentences below, when properly sequenced, form a coherent paragraph. Enter the correct order as a five-digit number (e.g., 31425).
1. Coral reefs are often described as the rainforests of the sea, a comparison meant to convey their staggering biodiversity relative to their small footprint.
2. Bleaching itself is not always fatal; a reef that bleaches can recover if warm-water stress subsides quickly enough for the coral's algal symbionts to return.
3. The comparison is apt in another, less flattering way too: like rainforests, reefs are being degraded faster than most other ecosystems on the planet.
4. Repeated bleaching events, however, leave progressively less time for recovery between episodes, and it is this compounding frequency, more than any single event, that threatens reefs' long-term survival.
5. The chief driver of this degradation is thermal stress from warming oceans, which triggers the phenomenon known as coral bleaching.
1. Coral reefs are often described as the rainforests of the sea, a comparison meant to convey their staggering biodiversity relative to their small footprint.
2. Bleaching itself is not always fatal; a reef that bleaches can recover if warm-water stress subsides quickly enough for the coral's algal symbionts to return.
3. The comparison is apt in another, less flattering way too: like rainforests, reefs are being degraded faster than most other ecosystems on the planet.
4. Repeated bleaching events, however, leave progressively less time for recovery between episodes, and it is this compounding frequency, more than any single event, that threatens reefs' long-term survival.
5. The chief driver of this degradation is thermal stress from warming oceans, which triggers the phenomenon known as coral bleaching.
Show answer and solution
Answer: 13524
Sentence 1 introduces reefs and their biodiversity. Sentence 3 pivots to the 'less flattering' comparison of degradation. Sentence 5 names the chief driver (bleaching from thermal stress). Sentence 2 qualifies that bleaching alone need not be fatal. Sentence 4 concludes with what actually threatens long-term survival — repeated, compounding bleaching. Order: 1-3-5-2-4.
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