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OpenStudy (anonymous):
MEDAL GIVEN!!! A coral reef is made of ______, a mineral that forms the skeletons of coral animals. Limestone Calcium Carbonate Coral Reefs Calcium
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OpenStudy (sboodhoo):
i think b not for sure though
OpenStudy (sboodhoo):
never-mind i looked it up it is b
OpenStudy (sboodhoo):
A coral reef is made of thin layers of calcium carbonate. Coral polyps form a living mat over a calcium carbonate skeleton. oceanservice.noaa.gov/facts/coralmadeof.html
OpenStudy (anonymous):
yes thanks @sboodhoo made 100%
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