Hazardous Materials and Toxic Substances

Salinity can be measured by passing an electric current between the two electrodes of a ______ in a sample of soil or water.

The ______ of a soil or water sample is influenced by the concentration and composition of dissolved salts.

[Blank] rocks are more radioactive than most sedimentary rocks.

Exposure to elevated ______ levels can occur during rare earth production.

The level of potential hazard from radioactive minerals depends on the type of ______ and its half-life.

Salty water has an ______ potential too high for freshwater biota and most terrestrial plants to survive.

[Blank] water has a salt concentration of about 10% of seawater's salt concentration.

Careful management of ______, overburden and groundwater discharges is required to ensure that the environmental impacts of salinity are avoided.

[Blank] is deposited with the waste rock in overburden or waste.

Radioactivity increases in ______ orebodies.