Answer :
The correct formula for limestone, which is a naturally occurring form of calcium carbonate, is A. CaCO₃ .
Limestone forms primarily from the remains of marine organisms' calcium carbonate shells or exoskeletons.
- Over time, these accumulations compact and lithify into rock.
- Limestone is a naturally occurring form of calcium carbonate, and its correct formula is CaCO₃ .
- This sedimentary rock is primarily composed of the mineral calcium carbonate and frequently forms from the remains of marine organisms.
When these organisms die, their calcium carbonate shells or exoskeletons accumulate on the ocean floor, eventually compacting and lithifying into limestone rock.
