Answer:
Arm: Supports the tube and connects it to the base.
Base: The bottom of the microscope, used for support.
Dramatic Form:
This is the way a story is told (so it's told dramatically)
that is the only one I know sorry :( hope this helped though
A word that serves as a key, as to the meaning of another word, a sentence, passage, or the like.
a word used to encipher or decipher a cryptogram, as a pattern for a transposition procedure or the basis for a complex substitution.