gas does what after going through a furnace into a cottage
expands becomes toxic has odor warmth Rise moves burning compresses
A B C D E F G H
Cottages are heated by gas space heat or gas furnaces.
gas expands after going through a furnace into a cottage
gas does what after going through a furnace into a cottage (A) expands (B) becomes toxic (C) has odor (D) warmth (E) Rise (F) moves (G) burning (H) compresses