The systolic and diastolic pressure is respectively are:- a) 120 and 80 mm of Hg
b) 80mm and 120 mm of Hg
c) 120 and 120 mm of Hg
d) 80 and 80mm of Hg

A

Explanation:

Systolic pressure is the maximum blood pressure during contraction of the ventricles; diastolic pressure is the minimum pressure recorded just prior to the next contraction. The blood pressure is usually written as the systolic pressure over the diastolic pressure

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.