A seismometer is an instrument that responds to ground noises and shaking such as caused by earthquakes, volcanic eruptions, and explosions. They are usually combined with a timing device and a recording device to form a seismograph.
Iron was able to show previous orentations of earth's magnetic field
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Commodity dependence makes countries more vulnerable to negative economic shocks,” said UNCTAD's commodities head, Janvier Nkurunziza. “It can have a negative impact on export and fiscal revenues and adversely affect a country's economic development.
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