Answer:
Option: c. Sewer
Explanation:
Sewer plays a key role in collecting wastewater from human populations more effectively than in the past. Before, the emergence of cities, there was no proper procedure to collect the wastewater in America, which ultimately affected the environment and underground water. As cities began to take shape in America with a larger population, the sewage system came in the late 1850s in Chicago and Brooklyn.
<span>hexaneb. etherc. formaldehyded.....there are so many moleucles eve maybe water can be one :)</span>
Republicanism principle
it holds that the people must participate directly in the election of those that will govern the state, and the president being the chief executive of government,it is in line with this principle that the people must participate directly in his election. It also establishes democracy.
