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
Answer:
faults can cause sudden earthquakes when the tension of the tectonic plates build up and then releases
The correct answer is the Richter scale
Mercali is used to measure damage created by the earthquake, while the remaining two are not scales of measurement.
Answer: Their population will rapidly decrease in till eventually they are no longer.
Explanation: Due to having less and less area to nest, the costal bird species population will slowly start to decline.
True because the order mercury Venus earth and Mars then there is the belt then after that there is the gas planets so yes
