7. Given that the contour lines on the topographic map are in feet, what is the contour interval?
Ocean
F
B
A. 10 feet
B. 20 feet
C. 50 feet
D. 100 feet

7 Given that the contour lines on the topographic map are in feet what is the contour interval Ocean F B A 10 feet B 20 feet C 50 feet D 100 feet class=