Answer:
C
Explanation:
Roads can vary in elevation, since a road is essentially any path to walk on.
Hills have varying elevations - they are higher at certain points.
Rivers can flow downhill and aren't always at equal elevation.
Contour lines on a topographical map connect points of equal elevation. If you were to follow a contour line while walking, the elevation would remain constant.
3x+ 9= 90 answer is X= 27
The answer is The Stratosphere
The main U.S. goal in the Southeast Asia War was to protect South Vietnam -- initially from a local communist insurgency and later from conquest by communist North Vietnam. The U.S. also hoped to prevent the spread of communism to other nearby countries. ... The U.S. gave France military assistance in fighting insurgents
