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Which two pieces of data could indicate that a volcano is about to erupt?

A. A change in the types of gas detected in the air
B. A drop in average air temperature in one region
C. A decrease in the ocean level near a mountain range
D. An increase in temperature near Earth's surface



Answer :

GinnyAnswer

Final answer:

Essential data indicating volcanic eruption includes gas composition changes and temperature rises near Earth's surface.


Explanation:

Two Pieces of Data Indicating Volcanic Eruption:

  • A change in the types of gas detected in the air: An increase in gas emissions like sulfur dioxide or carbon dioxide can indicate an imminent eruption.
  • An increase in temperature near Earth's surface: Rising temperatures can be a sign of magma moving closer to the surface, suggesting an upcoming eruption.

Learn more about Volcanic Eruption Indicators here:

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