In addition to secretions from the skin, latent prints may be ...

[bio_gurl]

In addition to secretions from the skin, latent prints may be composed partially or wholly of ___________________ .
 
  a. amino acids
  b. water
  c. contaminants
  d. all of the above

Question 2

Latent prints are constituted of materials which are either __________ or ____________ in water.
 
  a. soluble, insoluble
  b. visible or invisible
  c. processed or not processed
  d. patent or plastic

[kjohnson]

Answer to Question 1

c

Answer to Question 2

a