Which is a layer of sedimentary rock that forms from calcium carbonate in the deep ocean? Salt
Limestone
Sandstone
Shale

Limestone

Explanation:

Limestone is made up of carbonate minerals, such as calcite. The shells and skeletons of ocean organisms are formed of these minerals. When the organisms die, the shells and skeletons settle on the ocean floor as layers of sediment. Over time, the layers become buried, pressed together, and cemented to form limestone.

4

the answer to your question is slate