Assertion: coral reef | /r/CapableOf | face algal blooms
Facets:
value: since their emergence
type: TEMPORAL
Source sentences:
text: Since their emergence 485 million years ago, coral reefs have faced many threats, including disease, predation, invasive species, bioerosion by grazing fish, algal blooms, geologic hazards, and recent human activity.
text: Since their emergence 485 million years ago, coral reefs have faced many threats, including disease, predation, invasive species, bioerosion by grazing fish, algal blooms, geologic hazards, and recent human activity.