What is the most serious effect of water pollution created by human activity? it can affect the health of people or animals. it can affect the air surrounding it. it can interfere with future building in the area. it can interfere with boating and cause accidents.

It can affect the health of people or animals.

Explanation:

Contaminated water can pose a serious risk for both animals and humans. Animals and plants that live in this water often die because of this pollution. Even if a certain animal does not die because of the contamination, it would likely die because of the changes in the food chain. Animals and people that drink their water from this source can become sick from the bacteria and the diseases that are often carried in this water.

workers of lowell mills were greatly benefited for the waltham type of work which was more a paternalist kind, trying to protect the integrity of this little girls coming from small farmers and providing an adequate place of work, this in an effort to avoid the issues of bad place conditions and immorality that the people in bigger industrialized cities of great britain were experimenting.

i believe it d) heterogeneous