Assertion: coral reef | /r/Desires | sunlight
Facets:
value: to grow
type: PURPOSE
value: to survive
type: PURPOSE
Source sentences:
text: Coral reefs need sunlight since individual polyps, which contribute to the growth of corals, contain symbiotic algae.
text: Coral reefs form in waters from the surface to about 150 feet (45 meters) deep because they need sunlight to survive.
text: Fact 19: A coral reef needs sunlight to grow, that is why they hardly ever grow in waters deeper than 45 feet.