Certain Metallic Crystals Leave a Record of the Polarity of the Earth

question 92

Multiple Choice

Certain metallic crystals leave a record of the polarity of the earth at the point in time when they were formed in molten rock because they:

• A)leave radioactive "signatures" that scientists can read
• B)act as small magnets that orient themselves to the poles before the rock solidifies
• C)form ring-type patterns like tree rings that can be counted
• D)contain amino acids which form as crystals,and this change in the amino acids can be used to determine the passage of time

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Definitions:

TMS

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Real-time FMRI

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Manifestations of Post-Traumatic Stress Disorder, including flashbacks, severe anxiety, and uncontrollable thoughts about a traumatic event.

Genetic Error

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