What is the purpose of an investigation

What is the purpose of an investigation, and why is the process important? Provide examples of what might happen when the process is not followedHow have investigators processed crime scenes without technological advancements? How has technology changed the nature and effectiveness of crime-scene processing and evidence collection? Which technology do you think has made the biggest difference, and why?** Need each question answered in no less than a minimum of 300 words, referenced where it applies to.

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