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drelog drelog
wrote...
Posts: 2711
8 years ago
The earliest seismographs were designed by the Chinese nearly 2000 years ago to measure ________.
A) the direction to the earthquake focus
B) the intensity of an earthquake
C) the magnitude of an earthquake
D) the depth of an earthquake focus
Textbook 
Earth Science

Earth Science


Edition: 14th
Authors:
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PulsaPulsa
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Posts: 1845
8 years ago
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drelog Author
wrote...
8 years ago
Double checked your answer with my friend, it's right Smiling Face with Open Mouth
ןnɟʎoɾ sʎɐʍן∀ Slight Smile
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