How do plants and sea life carbon in the carbon cycle?
how is sediment a part of the carbon cycle?
how are sea shells a part of the carbon cycle?
how does circulation in the ocean move carbon in the carbon cycle?

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.