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Why was the sample heated in step 5? describe the chemical principles involved in the reasoning behind this step?
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The ruiz family is exchanging euros for us dollars. the exchange rate is 1 euro equals 1.35261 usd. since the ruiz family knows that usd are stated to the nearest hundredth of a dollar, they used the conversion ratio
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Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.
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Cell differentiation causes embryonic cells to become which of theses cells...
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