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← GeographyWhich chemical outcome escalates when increased soil acidity impairs buffering?
A)Accelerated heavy metal mobilization leaching✓
B)Enhanced nitrogen fixation by bacteria
C)Reduced aluminium silicate weathering rates
D)Decreased phosphorus availability for plants
💡 Explanation
Increased acidity accelerates heavy metal solubility; as acidity overwhelms buffering capacity, increased metal ions enter the soil solution; this promotes intensive soil leaching of dangerous materials, because lower pH enhances metal dissolution, therefore mobilization and runoff are more likely, rather than precipitation.
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