I believe the answer is: <span> preservation of evidence.
</span><span> preservation of evidence is critically important because the genetic Trace or fingerprints that left on the evidence could be easily erased.
When such evidence is erased, the justice department wouldn't have sufficient proof when they are prosecuting the suspects.
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True <span>Placebos ARE sometimes used in research in order to demonstrate the effects of participant expectations or beliefs on the outcome of behavior.</span>
B.) 621,780 kilograms limit of an imported good (is correct on grad point )
A demand schedule generally focuses on overall demand of a product or service. That is, in units or monetary value. This could be over time, yearly, quarterly, or semianually.
