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

Ray lo bisects nlm, lm=18, no=4, and ln=10. what is the value of x?

What effect has the drug trade had on some governments in middle and south america? a. it has funded political instability. b. many nations have created democratic governments. c. many governments have allowed the drug trade to fund local programs. d. it has funded political stability.

Difference between shell and orbital