What is an area with dense population that encompasses more than one city?

MEGALOPOLIS is a common term that is used to describe an area with a dense population that encompasses more than one city.
The term came from the Greeks because they were regarded as the first civilizations that developed a strong Architectural knowledge and contributed heavily to developments that we see in the modern age.

at least one carbon monoxide detector must be installed on each floor of your home, including the basement. you’ll also want to consider adding a detector in your garage if it’s attached to your home. and most importantly, install a carbon monoxide detector inside or directly outside of each bedroom or sleeping area. the effects of carbon monoxide are nearly impossible to detect when sleeping. if co is detected, the alarm will sound to alert and wake you.

don’t install the detector….

near any gas or fossil fuel area to avoid false co detection

in humid or moist areas including bathrooms

in direct sunlight as it could overheat

within reach of children to avoid easily tampering or damaging

near windows or windy areas

behind doors, cabinets, curtains or other areas to prevent co detection