Which of these makes up a part of the hydrosphere?
a.
the rocky mountains
b.
the zebra population
c.
the lambert glacier
d.
carbon dioxide given off by plants

This is the spere with all the water so the answer is the Lambert Glacier 

Americans often speak of their country as one of several large regions.  these regions are cultural units rather than governmental units --  formed by history and geography and shaped by the economics, literature and folkways that all the parts of a region share. what makes one region different from another? a region's multicultural heritage as well as distinct demographic characteristics like age and occupation make regions different and special. within several regions, language is used differently and there are strong dialects. there are also differences in outlook and attitude based on geography.