The answer is D! This is because there is a change the colour, a change in odor and a precipitate formed!
Answer:
Because oil is less dense than water, it will always float on top of water, creating a surface layer of oil.
Explanation:
Answer:
One of the most important uses for fingerprints is to help investigators link one crime scene to another involving the same person. Fingerprint identification also helps investigators to track a criminal's record, their previous arrests and convictions, to aid in sentencing, probation, parole and pardoning decisions.
Explanation:
