Contour lines are usually curves because
a. it is a mapmaking convention
b. it is easier to draw the map that way
c. curves prevent the lines from crossing
d. terrain is rarely oriented along straight lines

Which feature of greece’s geography explains the ancient greeks’ need for trade? a. the mountainous landscape b. the dry summer climate c. the location along the seacoast d. the location along the boundary between asia and europe.