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.
Calcium is the most common mineral found in the body and is required for the formation of bones and for bodily functions like muscle contractions and blood clotting.alcium 101. Calcium is the most common mineral found in the body and is required for the formation of bones and for bodily functions like muscle contractions and blood clotting. Almost all the calcium in our bodies is stored in the bones and teeth.