Because they stretch across 4,500 miles, the mountains are considered the world’s longest mountain range.
a.
appalachian
b.
rocky
c.
andes
d.
sierra madre

Which statement is an accurate description of life in mongolia in recent years? the majority of the population now lives in cities. after a brief period of democracy, communists regained control of the government. subsistence farming remains the primary economic activity in the country. relations between mongolia and china are now tense. -gradpoint