English: Manganese enters the ocean as dust or runoff in the form of dissolved Mn (II). It leaves the ocean via diffusion. This dissolved Mn is oxidized and reduced by organisms, and then sinks to the ocean floor. As it sinks it undergoes aggregation or scavenging. From the ocean floor, Mn is lost through burial, and is inputted into the ocean cycle by sediment diffusion and hydrothermal vents.
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