Answer: my guess is that they interacted with travelers coming on accident.
Explanation:
Ferromagnesian vs. non-ferromagnesian
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1-Contains Magnesium and Iron 1- Contains little or no Magnesium &
as major components Iron
2- Color: very dark 2- Color: Generally lighter
3- Density relatively high 3- Density relatively low
I believe the correct answer from the choices listed above is option D. The difference between a seismograph and seismogram is that a seismograph is the instrument that detects and records volcanic activity, while a seismogram is the written record of that activity. Hope this answers the question.
