What was the reason for installing a worldwide network of seismometers in the 1950s and 1960s?

A) to save human lives by predicting volcanic eruptions and earthquakes
B) to study plate tectonic theory
C) to monitor underground nuclear bomb testing
D) to study mine blasts


Answer: C

Environmental & Atmospheric Sciences

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Pollution concentration is

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Which of the following statements about increasing ocean temperatures as a result of global warming is correct?

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