What structure serves as a passageway for both air and food?

a. pharynx

b. trachea

c. larynx

d. bronchus

The structure in your system that serves as a passageway for both air and food is your PHARYNX. The pharynx, or throat, is the passageway leading from the mouth and nose to the esophagus and larynx. The pharynx permits the passage of swallowed solids and liquids into the esophagus, or gullet, and conducts air to and from the trachea, or windpipe, during respiration.

Answer : romans built laws to manage the pollution which was lead by smoke produced by the factories.

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.

Ilike to eat pears ya nah wha im sayin b? shout out to all my pears b.