Why does the 2009 u. s. population continue to grow even though the united states has essentially established a zero population growth (zpg)?

(d) rivers.

explanation:

civilizations developed around rivers because their waters provided places to hunt and fish. also, as the rivers flooded, the lands around them became fertile. this allowed them to support farming. this is especially true of the nile river, which flooded the same time each year.

answer; i believe the above statement is (true);