I do not understand that Fixed Bolivian soil.

However, lead does not tend to migrate in soil but instead remains fixed to soil particles.

Lead in lead-acid batteries in unlined landfills can find its way into groundwater if it is not chemically complexed and fixed in the particular soil it encounters.

Particularly promising are crops that combine soil nitrogen fixing qualities and human nutritional and/or market values, which are cultivated by poor smallholders and women farmers (e.g., cowpea, promiscuous soybean and dolicos lablab).

It is immaterial how long an enterprise of a Contracting State operates in the other Contracting State if it does not do so at a distinct place, but this does not mean that the equipment constituting the place of business has to be actually fixed to the soil on which it stands.