Prefixes Iso- means "equal." You may have encountered this prefix
in the term isosceles triangle in a
math class. An isosceles triangle
has two equal sides. What
quantity is equal between two
solutions that are isotonic?

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.

answer///systemic;