Major volcanic events that have occurred within the Ring of Fire since 1800 included the eruptions of Mount Tambora (1815), Krakatoa (1883), Novarupta (1912), Mount Saint Helens (1980), Mount Ruiz (1985), and Mount Pinatubo (1991).
A Syncline is where lays of rock bend downwards and then curve up.
An Anticline is the opposite: layers of rock bend upwards and then down.
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A I think this is the answer
Answer:
gulf stream doesnt fit in
the others are all currents
Explanation: