The image shows a diagram explaining a concept.
Which concept does the diagram show?
1 m3 column of
air (masse 103 kg)
temperature
altitude
air density
air pressure
Gravitational
force
1 atm pressure
at surface

the answer would be knowledge about cars!

true is the

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.