A urban area is a area in the city and i rural area is somewhere in the county
The answer is
plants...
dams are man made...winds, they blows the soil away which causes erosion..rivers, they also cause erosion because when they flow, they carry the soil in the direction they r going n ump it somewhere else.
but plants, plants help breaks down soil n even makes more because the roots goes into the rocks n craks it up blah blah..and they hold the would from moving, like grasses do
I dont think my explanation was that good but I hope I helped a bit :)
We have that a mile is equal to 5280 feet. Hence the whole distance is 15.998.400 feet in distance. Since every 16 feet we have one stroke, we have to divide the distance by 16 to get the number of strokes. The result is 999.900 strokes. Hence, if one wants to be accurate, the correct title is "999.900 pedal strokes". For poeticness though, maybe the best title is "1 million pedal strokes".