Mostly by land. They all connect in one way or another. Atlantic and Pacific at the south end of South America. The Indian and Atlantic oceans at the bottom of Africa. The Arctic sea connects the Atlantic and Pacific oceans. The Med ends up in the Atlantic.
The continents are all mainly separated by oceans.
Landforms get separated by sea's oceans, and rivers.
Animals
fossils
Erosion
pacific and Atlantic
Erosion
The Bering Strait is the strait that seperates the arctic and pacific oceans.
The fact that it is a large continent separated from the rest of the world by the Atlantic and Pacific Oceans.
You see cultural connections between cities separated by oceans. or D. You see how trade spreads culture across oceans.
fossils
The Isthmus of Panama separates the world's two largest oceans. They are the Pacific Ocean and the Atlantic Ocean!!