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: The Most Abundant Mineral in the Human Body. Plus the best non-dairy sources of this mineral. Calcium is not only the most abundant mineral in the body, it is also the most commonly found in the material universe. Yes, it is that ubiquitous and therefore it can be found in good measure in various food groups.