Final answer:
UFFI, lead-based paint, and asbestos have several commonalities. They were used in insulating materials, posed a risk to humans due to harmful gas emissions, and were used in residential construction.
Step-by-step explanation:
Urea-formaldehyde foam insulation (UFFI), lead-based paint, and asbestos have several commonalities. Firstly, all three were used in insulating materials. Secondly, they all pose a risk to humans because they may emit harmful gases. And finally, they were all used at one time in residential construction.