Coral Reefs: Nature's Most Incredible Mystery
Описание
What Are Coral Reefs? Amazing Facts About coral Reefs in 2020
Description
#Coralreefs #Coralreefsfacts #Coralreefspurpose #Educationalvideo
What Are Coral Reefs? Amazing Facts About coral Reefs in 2020
A coral reef is an underwater ecosystem characterized by reef-building
corals. Reefs are formed of colonies of coral polyps held together by
calcium carbonate. Most coral reefs are built from stony corals,
whose polyps cluster in groups.
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