Answer:
3.29ft/mi
Explanation:
The gradient of a river is the slope through which a river flows. It measures the vertical drop in elevation of river to the horizontal distance.
Mathematically;
River gradient =
Elevation = 1229ft
Horizontal distance = 373miles
River gradient = = 3.29ft/mi
B) one
Question C
2
3 is physical 4 is as well so it has to be 1 or 2