Pacific and the Arctic Ocean, but with different boundaries between the basins. These boundaries show the lines of very little surface connectivity between the different regions which means that a particle on the ocean surface in a certain region is more likely to stay in the same region than to pass over to a different one.

Formation of oceanic crusts and basins

Earth's structure

Depending on the chemical composition and the physical state, the Earth can be divided into three major components: the mantle,

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