Answer 1:
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here to get more answers to this question,
and
then read the text below Heat may be
beneficial in some cases, such as a print on a
plastic container which was subsequently softened
turning into a molded fingerprint. Another
example would be a latent fingerprint left on a
metal. The salts in the fingerprint residue can
cause corrosion if the metal is heated to a
pretty
high temperature. Some additional websites
that may be helpful to look over: w
iki
a little
history
f
actors
affecting latent prints
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