What is the definition of a watershed (in a river)?
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According to speculation and study, what will happen to the global birth rate in about 40 years? (1 point)

What is most often given a value of zero to describe an object’s position on a straight line? displacement reference point distance ending location

Which is an accurate description of the physical characteristics of poland? its fertile soil is found only along riverbanks, and its mountainous region in the northwest has few mineral resources. it is mostly flat with fertile soil except in the east and northeast, and the mountainous region in the south has large deposits of coal and copper. it is covered with thick forests, and it has large reserves of coal, petroleum, and natural gas. its landscape is dominated by plateaus, mountains, and high ridges, and it has large deposits of sulfur and copper in the northeast.