Other studies, however, have shown that these chemicals remain adsorbed to surface soil particles, making them more susceptible to surface erosion than infiltration.
12.
It also could help explain why Mars has lost much of the atmosphere and water that appear to have once existed, judging by surface erosion.
13.
The steepness of these unmulched slopes with a nitrogen-hungry crop was completely contrary to my experience, because unmulched soil can lose nitrogen faster to leaching and surface erosion.
14.
For example, in Southern Zambia, annual ploughing of fields without fallowing or subsoiling ( " ripping " ) has led to severe losses of topsoil due to surface erosion.
15.
However, because of the collapse of the volcanic material combined with subsequent surface erosion, the Prospect Hill laccolith had a concave upper surface until modern times, when quarrying altered its shape.
16.
She and others extolled the many benefits of trees, including soaking up harmful gases that contribute to the greenhouse effect, decreasing surface erosion, providing shade cover and keeping a city's average temperature lower.
17.
From previous photography, showing valleys that appeared to start abruptly at almost full size and without tributary channels, it was assumed that flash floods of upwelling ground water were mainly responsible for surface erosion.
18.
Indeed, a study published in 2015 on glacial underwater topography at 3 sites found cavities, due to warm subglacial water intrusion, which has been identified as a possible dominant force for ablation ( surface erosion ).
19.
The limitation of surface erosion processes is particularly apparent in areas of shrub and grass where the fine root distribution is consistent and clearly defined, however cohesion is generally limited to the top 1m of soil.
20.
The removal of this mass unbalances the forces that stabilize the dam against its reservoir as the mass of water still impounded behind the dam presses against the lightened mass of the embankment, made lighter by surface erosion.
