Its presence in groundwater is largely the result of minerals dissolving naturally over time, as rocks and soils weather and age.
(Its presence in groundwater; is largely; the result of minerals) (minerals; dissolving naturally; T:over time) (Its presence in groundwater is largely the result of minerals dissolving naturally over time, as rocks; soils; weather and age)
Its presence in groundwater minerals Its presence in groundwater is largely the result of minerals dissolving naturally over time, as rocks
is largely dissolving naturally soils
the result of minerals
T:over time
weather and age