Its A and B i think because when cold air and warm air.mixed it.form precipitation like tornado
<span>1. The investigator should use fluorescent fingerprint powder, so that the prints will be visible on the dark surface when a special kind of light is used.
2. A possible cause of death would be asphyxia, and is one of the most common causes of death that involve murder and violence.
3. C. thin layer chromatography and Infrared spectrometry
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