I dont understand taht to be honest but if i did i wouldve answered them for you
AP BIO !!! That is the hardest AP class.
Answer: Quartz clocks and quartz watches are timepieces that use an electronic oscillator regulated by a quartz crystal to keep time. This crystal oscillator creates a signal with very precise frequency, so that quartz clocks and watches are at least an order of magnitude more accurate than mechanical clocks.
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Hello. The answer to your question is B
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