Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.

Who or no make that what increases with age?
What increases with age?

Wht do rock units what happens deeper in the earth I mean under what type of compression do they become thicker and shorten?
Rock units become thicker and shorten when placed under this type of compression. 

What branchlines or I guess mainlines head west and south from the city?
What mainlines head west and south from the city?