Question

which of the following determine(s) the severity of a pollutant?
chemical nature
concentration
persistence
all of the choices

Explanation:

The chemical nature of a pollutant affects its reactivity and toxicity. Concentration determines how much of the pollutant is present, with higher concentrations often more harmful. Persistence refers to how long the pollutant remains in the environment, and long - lasting pollutants can cause more cumulative damage.

Answer:

All of the choices