in many cities, water from shallow wells is not used for drinking water because a. shallow wells are easy to maintain b. water near the surface is more easily contaminated c. shallow wells destroy all seasonal crops d. shallow wells cause water to evaporate

The correct answer is B. Water near the surface is more easily contaminated

Explanation:

Water contamination refers to the existence of contaminants such as chemicals, toxins, bacteria, metals, among others in water bodies including rivers, lakes, ponds, and even wells. These contaminants which are mainly the result of human activity might be dangerous and therefore water contamination represents an important risk for human health, because of these waterbodies with high levels of contamination are never used for drinking water. Besides this, more common water contaminants can be found on the surface of Earth from which are spread to waterbodies, this also means the shallow the waterbody is the more probabilities there are the water is contaminated due to the exposition of it to the contaminant and because in waterbodies underground the soils acts as a filter for contaminants. Thus, shallow water bodies including shallow wells cannot be used for drinking because the water near the surface is more easily contaminated.

becasue in the south they disallowed slavery but in the north slavery was illegial this boilled into because mexico wanted slavery

hope this

i believe the correct answer is b.