Our apartment has had an unusual smell for a few weeks. We have talked to other people who
live in our building, and they have noticed the smell, too. We have reported the problem to the
building's owner, and she says she's going to have the building's air ducts checked as soon as
possible.
The word duct contains the root duc/duct. This root is also in the words aqueduct and
conduct. Based on this information, what does ducts mean in the paragraph?
pipes that channel a substance
holes that store a substance
devices that heat a substance