Glucose is
a. used in all respiration reactions.
b. produced as a result of respiration reaction.
c. the only substrate used in the aerobic respiratior
d. oxidized to carbon dioxide and oxygen is reduced

c

explanation:

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.

to this answer it would be edge enhancement