Letter Grade 4.0 Point Scale (+/-) A+: 4.0: A: 4.0: A-3.7: B+: 3.3: B: 3.0: B-2.7: C+: 2.3: C: 2.0: C-1.7: D+: 1.3: D: 1.0: D-0.7: F: 0.0
Coral calcium is a salt of calcium derived from fossilized coral reefs (primarily from limestone and coastal deposits).It has been promoted as an alternative, but unsubstantiated, treatment or cure for a number of health conditions.oral calcium is a source of calcium, which is an essential mineral for human life. Coral has a chemical structure that is very similar to the composition of human bone and is sometimes used as material in bone grafts.
A coral reef is like a sea rainforest. Corals are colonies made up of polyps, small animals with a maximum diameter of 2.5 cm (1 in). The soft polyp is linked to its neighbor through living tissue covered by mucus.During the day, the corals look like stones, because the polyps retire into their skeletons.here are about 350 species of reef making corals, amazing through shapes, sizes and colors. The coral branches may take various shapes, from moose or deer antlers, to trees, columns, tables, umbrella, mushrooms, as their names suggest.