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Over the Sargasso Sea, polluted air coming from North America is richer in biologically available iron than dusty air from the Sahara, which has potential implications for ocean productivity.
The mantle plume that is thought to have broken up the supercontinent Gondwanaland may have melted the bottom half of the Indian tectonic plate, facilitating its high-speed drift.
The presence of liquid water on the surfaces of Mars and Venus could be a key determinant for past occurrence of Earth-style plate tectonics on these planets