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The cliffs are chalk, a form of limestone from the remains of small ancient marine organisms.

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Q: Are the white cliffs of dover make from fossils or is the lime made from a chemical reaction?
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Where does chalk com from?

chalk comes from chalk deposits the white cliffs of dover is one then the grind it into powder then they press it into molds of chalk then they sell it


What is the chemical formula of chalk?

Chalk is CaCO3. The chemical name for chalk is calcium carbonate. It is a porous sedimentary rock, and is also a type of limestone. The White Cliffs of Dover are actually made from chalk.


Which is present in sea water in greater amount between sodium chloride and calsium?

I would say sodium chloride as it is also known as salt-water, calcium is found in chalky cliffs "white cliffs of dover", so near there may be a high amount but sodium chloride would be in greater amounts in the majority of sea water


What is the chemical composition of oyster shell?

I am not a biologist. But I think oyster shells and clam shells and scallop shells are made of calcium and oxygen, which is how (millions of years later) we get the white cliffs of Dover and chalk. If there are vitamins in these shells, I'd be surprised, as I would have expected the former/present tennants to consume them before heading to Dover or anywhere else. Also, if the nutritional value (vitamins) were worth any notice, do you think we'd throw these things away by the truck-load? Yeah. Me neither. (Still, I have no factual basis for this answer... yet.)


What are some interesting facts about calcium?

In undergoing studies, calcium with a dose of Vitamin D can reduce the risk of cancer. EDIT: *ahem* Now for THREE interesting facts about calcium. #1. Due to their unusually high calcium concentration, alpaca bones are ground up to be used as the primary ingredient in calcium supplements. #2. In the craggy fields of Peru (where alpacas are natively from) the mosquitoes have a special, calcium-rich saliva that replaces the lost blood in the animal it feeds from. This increases serum calcium levels in the blood (and therefore bones) of the aforementioned alpacas. #3. An ancient African tribe known as the Kaljijubouts used to preserve its dead by force-feeding the dying large amounts of the calcium-rich soil, thus calcifying their tissues.