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.
Minerals: Calcium. Calcium is the most abundant mineral in the human body and one of the most important. The calcium topic is huge and complex; let me try to make it concise and simple. This mineral constitutes about 1.5-2.0 percent of our body weight.