La siguiente grafica muestra los diferentes estados de una sustancia en determinadas condiciones de presion y temoeratura de acuerdo con la grafica, ¿cual es el cambio que ocurre en el estado de la sustancia cuando pasa del punto 1 al 2

answer: i cant find your answer. do u have another way i can answer it for you : )

explanation:

true                                                                                                       true true true true true true

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.