List the 3 ways carbon can enter the ocean?

Carbon dioxide from the atmosphere dissolves in the surface waters of the ocean. Some of the carbon dioxide stays as dissolved gas, but much of it gets turned into other things. Photosynthesis by tiny marine plants (phytoplankton) in the sunlit surface waters turns the carbon into organic matte

practical process described pest part of scientific investigation.

because practical knowledge is powerful then therotical knowledge.