Which horizon-related outcome happens downstream when excessive irrigation coincides with agricultural nitrogen application?

💡 Explanation

Elevated nitrate in groundwater happens because irrigation and nitrogen application enhances leaching, whereby percolation carries soluble nitrates into the aquifer. This impacts groundwater quality, rather than necessarily altering soil composition near the surface because the mechanism occurs downwards.

• Which effect results from decreased salinity near Greenland?
• Which process influences desert location due to descending air?
• Which process creates steep fjord walls where glacial ice formerly contacted bedrock?
• Which process degrades lagoon habitat behind barrier islands?
• Which mechanism explains why major global deserts often appear ~30° latitude from the equator?
• Which outcome occurs when regional uplift increases coastal erosion rates?