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.
Aegean Sea, the Black Sea, the Caspian Sea and the Ural River
All water boundaries
My geography teacher was telling us as well it is known as the Eurasian boundary as well
Answer:
Drilling companies drill vertically down to the desired distance and drill horizontally into the shale. They then use hydraulic fracturing, or fracking, to loosen up the rock enough to get the gas out.
Hope this helps
-Amelia
