PTE Reading
Re-order Paragraphs
1 questions. Answer them all, then submit once for your section score.
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1.
Re-order Paragraphs
Arrange the sentences into a logical order.
Put the sentences in the correct order:
- If the heat persists and the algae do not return, the starved corals eventually die, and the reef collapses.
- When the surrounding water grows too warm, however, the stressed corals expel these algae and turn ghostly white.
- The algae supply the corals with food through photosynthesis, while the corals offer them shelter and nutrients.
- This abundance depends on a partnership between the corals and tiny algae that live inside their tissues.
- Coral reefs cover less than one percent of the ocean floor, yet they shelter roughly a quarter of all marine species.