easy · SAT Reading & Writing
Coral reefs cover less than 1% of the ocean floor but support roughly a quarter of all marine species. Rising ocean temperatures, however, have caused widespread coral bleaching in recent decades.
Which choice best describes the relationship presented in the text?
- Coral reefs cover most of the ocean floor and are unaffected by temperature.
- Marine species are declining rapidly because reefs cover far too much of the entire ocean floor surface.
- Ocean temperatures have been falling in recent decades.
- Reefs support far more species than their tiny size suggests, yet warming water threatens them.
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