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Vedmedyk [2.9K]
2 years ago
9

Which underwater ecosystem is made of calcium carbonate structures?

Biology
1 answer:
d1i1m1o1n [39]2 years ago
6 0

Answer:

coral reefs

Explanation:

  • Coral is a sea living or aqueous animal.
  • Coral shells are made of solid calcium carbonate.
  • Chemical formula for calcium carbonate is CaCO3
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