In nature. Arsenic is in the form of stone and mineral compounds, and when it rains they wash of rocks and ores containing arsenic is an element are distributed into the underground water and chandin.
Natural arsenic compounds in the form of rocks and minerals. And when rain made the surface of rocks and minerals containing arsenic are elements distributed into the soil and groundwater.
In nature, the arsenic is in the form of compounds of rocks and minerals. And when it rains the leaching of rocks and minerals with arsenic elements spread into the soil and groundwater