Nat Turner led a slave revolt several years before the Civil War. The revolt failed and he was killed. he is known for leading 2 uprises in Virginia in 1831 before getting caught.
Calcium (Ca), chemical element, one of the alkaline-earth metals of Group 2 (IIa) of the periodic table. It is the most abundant metallic element in the human body and the fifth most abundant element in Earthâs crust.
The remaining 1% of calcium in the body is found in both extracellular fluid and within the cells, where it is involved in numerous metabolic roles. Calcium is critical to normal nerve conduction, muscle contraction, blood clotting, cell division, and electrical conduction in the heart.he body contains estimates between 750g and 1.3kg of calcium which makes calcium the most abundant mineral found in the body.