Fish populations and other aquatic resources are likely to be affected by changes in what aquatic factors? a. Water temperatures b. Disease c. Water quality d. All of the above.

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.

this might

answer; benefit; harmed;