Petra finds a discolored stain on the carpet at a suspected crime scene. What two presumptive tests might she use to determine if the stain is blood?
First, Petra sprays the discolored area with
, which returns a glowing blue color. However, she knows that this chemical might also turn blue with other substances that contain iron. Subsequently, she uses
, which turns pink, indicating the presence of hemoglobin.
Answers: 1
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What is one form of speech that is not protected by the u.s. constitution? a. speech about religion b. political speech about a candidate c. speech protesting the government d. speech that is slanderous
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Continue to drink or use other drugs and drive but be more careful
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Petra finds a discolored stain on the carpet at a suspected crime scene. What two presumptive tests...
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