'The skeletons of coral polyps are made of calcium carbonate, so coral reefs are mainly this sedimentary rock'
limestone
REEF MADNESS: The skeletons of coral polyps are made of calcium carbonate, so coral reefs are mainly this sedimentary rock
The skeletons of coral polyps are made of calcium carbonate, so coral reefs are mainly this sedimentary rock
The skeletons of coral polyps are made of calcium carbonate, so coral reefs are mainly this sedimentary rock
REEF MADNESS
limestone
REEF MADNESS