Answer: it is involuntary, the process is called digestion.
Explanation:
A coral reef is made of thin layers of calcium carbonate. Coral polyps form a living mat over a calcium carbonate skeleton. Stony corals (or scleractinians) are the corals primarily responsible for laying the foundations of, and building up, reef structures.
Answer:
I think this is it,
Explanation:
The rocks in the seafloor are much more than the rocks on the continents
FunkyMagmaYT
The answer to this is the remains and waste products of plants, animals and other living things organisms.
Answer: Blue because of google lol
