Unlike the NHS, the NSHSS is not a free organization. ... Additionally, NSHSS members can qualify to join the group in multiple ways. Currently, high school students must meet just one of the following criteria in order to qualify for the NSHSS: Achieve a GPA of 3.5.
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my accnt got deleted................!!!!!!!
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I'm pretty sure it's a and b. Sorry if I'm wrong.
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Vibrations in the earth caused by the sudden release of energy, usually because of the movement of rocks along a fault.