Goddard's work helped to establish the _____ ________ as the ...

[tth]

Goddard's work helped to establish the _____ ________ as the indispensible tool of the firearms examiner.
 
  Fill in the blank(s) with the appropriate word(s).

Question 2

The _____ ________ unit applies principles and techniques of chemistry, physics, and geology to the identification and comparison of crime-scene evidence.
 
  Fill in the blank(s) with the appropriate word(s).

[cassie_ragen]

Answer to Question 1

Answer: comparison microscope

Answer to Question 2

Answer: physical science