What is the primary reason that inorganic contaminants, such as heavy metals, do not disappear from the soil?

Answer

They are elements and cannot be chemically destroyed in the soil environment

Heavy metals like lead, arsenic, cadmium, and chromium are elements; they do not degrade and cannot be chemically destroyed in the soil environment. Their contamination profile changes based only on mobility and speciation.

What is the primary reason that inorganic contaminants, such as heavy metals, do not disappear from the soil?
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